Backing up vs Copy vs Duplicate vs Protect vs Secure vs Store

When to use each in English, with meaning, register, and examples.

Backing up

Top 2,000 (common)

Copy

Top 1,000 (very common) A2 noun

Duplicate

Top 2,000 (common) B1 verb

Protect

Top 1,000 (very common) A2 verb

Secure

Top 1,000 (very common) B2 verb

Store

Top 1,000 (very common) A2 noun

	Backing up	Copy	Duplicate	Protect	Secure	Store
Pronunciation	🇬🇧 //ˈbækɪŋ ʌp// 🇺🇸 //ˈbækɪŋ ʌp//	🇬🇧 /["/ˈkɒpi/"]/ 🇺🇸 /["/ˈkɑːpi/"]/	🇬🇧 //ˈdjuːplɪkɛt// 🇺🇸 //ˈduːplɪkeɪt//	🇬🇧 /["/prəˈtekt/","/prəˈtekts/","/prəˈtektɪd/","/prəˈtektɪŋ/"]/ 🇺🇸 /["/prəˈtekt/","/prəˈtekts/","/prəˈtektɪd/","/prəˈtektɪŋ/"]/	🇬🇧 /["/sɪˈkjʊə(r)/","/sɪˈkjʊəz/","/sɪˈkjʊəd/","/sɪˈkjʊərɪŋ/"]/ 🇺🇸 /["/sɪˈkjʊr/","/sɪˈkjʊrz/","/sɪˈkjʊrd/","/sɪˈkjʊrɪŋ/"]/	🇬🇧 /["/stɔː(r)/"]/ 🇺🇸 /["/stɔːr/"]/
Meaning	To make a copy of files or data to keep safe.	To make a duplicate of something.	To make an exact copy of something.	To keep something safe from harm.	To make safe or protect something.	A place where you can buy things.
Example	I will be backing up my laptop before the update.	I need to make a copy of this document for my records.	Please duplicate this document for the meeting tomorrow.	It's important to protect the environment for future generations.	We need to secure the doors before we leave for the night.	I need to go to the store to buy some groceries.
Register	Neutral	Neutral	Neutral	Neutral	Neutral	Neutral
How common	Top 2,000 (common)	Top 1,000 (very common)	Top 2,000 (common)	Top 1,000 (very common)	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	-	A2	B1	A2	B2	A2
Part of speech		noun	verb	verb	verb	noun
Collocations	back up data, back up files, back up system, back up information, back up regularly	accurate, faithful, good, create, make, print, machine, room, center, copy of, additional, extra, further, print, produce, circulate, circulate, be available, copy of, good, great, ad, edit, prepare, produce, editor, writer, deadline	duplicate file, duplicate efforts, duplicate information, duplicate record	completely, fully, adequately, need to, seek to, strive to, against, from, with, be aimed at protecting something, constitutionally protected, federally protected, completely, fully, adequately, need to, seek to, strive to, against, from, with, be aimed at protecting something, constitutionally protected, federally protected, completely, fully, adequately, need to, seek to, strive to, against, from, with, be aimed at protecting something, constitutionally protected, federally protected	easily, safely, eventually, be able to, manage to, fail to, an attempt to secure something, an effort to secure something, be aimed at securing something, firmly, properly, tightly, to, with	big, large, major, chain, go to, visit, close, carry something, offer something, sell something, chain, account, card, at a/​the store, in a/​the store, the back of a/​the store, the front of a/​the store, big, large, major, chain, go to, visit, close, carry something, offer something, sell something, chain, account, card, at a/​the store, in a/​the store, the back of a/​the store, the front of a/​the store, good, great, large, have, keep, build up, cupboard, room, store of, cold, dry, temporary, hold something, in a/​the store, store for
Antonyms	-	destroy, erase, original	original, unique	expose, endanger, harm	danger, unsecure, risk	sell, dispose, discard
Common mistakes	Using 'back up' and 'backup' interchangeably without understanding the difference., Confusing with 'backing down', which implies retreating or giving in., Misplacing the verb form, like saying 'backup the files' instead of 'back up the files'.	'Copy' is sometimes confused with 'paste'., Learners may use 'copy' instead of 'duplicate' in formal situations., Confusing the noun 'copy' with the verb form.	Confused with 'duplicate' as a noun instead of a verb., Using 'duplicated' incorrectly as an adjective in some contexts., Misplacing the object, e.g., saying 'duplicate copy' instead of just 'duplicate'.	Confusing 'protect' with 'prevent' - they have different meanings., Using 'protect' with an incorrect preposition like 'protect to'. It should be 'protect from'., Saying 'protecting' when referring to non-personal objects; use 'preserve' instead.	Confused with 'ensure' - 'ensure' means to make sure something happens., Using 'secured' as an adjective when it should be a verb., Misplacing the emphasis on the second syllable.	Confused with the verb 'store' meaning to keep something., Saying 'the stores' when referring to multiple items instead of multiple places., Using 'store' in formal contexts where 'retail outlet' might be more appropriate.
Usage notes	Used in both technology and general contexts; common in IT discussions. Avoid in formal writing, use 'create a backup' instead.	Used in academic contexts (like copying notes) and everyday situations (like copying a document). Avoid if referring to personal ideas as 'copies' may imply plagiarism.	Use 'duplicate' in both formal and informal contexts. Avoid in casual conversations when a simpler word like 'copy' would work better.	Use 'protect' when talking about keeping someone or something safe. It is appropriate in both formal and informal contexts, but avoid overusing it in casual conversation, where simpler words like 'keep safe' might work better.	Used to indicate making something safe, but can also mean to obtain or achieve something. More common in formal contexts when referring to safety and in neutral situations for obtaining.	Use 'store' for general places to buy things, like grocery stores or clothing stores. Avoid using it for more specific terms like 'boutique' or 'supermarket'.

See it in real clips

And land routes east? Backed up for per hours.

Better Call Saul › S1 E1

Backing up. I have to back up. I need more stickers.

The Sopranos › S1 E1

Back up.

And land routes east? Backed up for per hours.

Better Call Saul › S1 E1

Backing up. I have to back up. I need more stickers.

Backing up

I'll get you a copy.

The Wire › S1 E1

Copy.

Top Gear › S1 E1

just to turn out a straight copy.

I'll get you a copy.

The Wire › S1 E1

Copy.

Copy

Succession › S1 E1

And without Daddy around to protect you, I'm gonna eat you all.

Agents of S.H.I.E.L.D. › S1 E1

We protect people from news they aren't ready to hear.

Game Of Thrones › S1 E1

who but you can protect the king?

Succession › S1 E1

And without Daddy around to protect you, I'm gonna eat you all.

Agents of S.H.I.E.L.D. › S1 E1

We protect people from news they aren't ready to hear.

Protect

Frequently asked questions: Backing up vs Copy vs Duplicate vs Protect vs Secure vs Store

What's the difference between Backing up, Copy, Duplicate, Protect, Secure, and Store?

Backing up: To make a copy of files or data to keep safe. Copy: To make a duplicate of something. Duplicate: To make an exact copy of something. Protect: To keep something safe from harm. Secure: To make safe or protect something. Store: A place where you can buy things.

Which is more advanced: Backing up, Copy, Duplicate, Protect, Secure, and Store?

Secure is the highest level, at B2, on the CEFR scale.

Can you show an example of each?

Backing up: I will be backing up my laptop before the update. Copy: I need to make a copy of this document for my records. Duplicate: Please duplicate this document for the meeting tomorrow. Protect: It's important to protect the environment for future generations. Secure: We need to secure the doors before we leave for the night. Store: I need to go to the store to buy some groceries.

Can I use Backing up, Copy, Duplicate, Protect, Secure, and Store interchangeably?

Not always. Backing up, Copy, Duplicate, Protect, Secure, and Store are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.