Close the flap vs Seal

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

Close the flap

Beyond 10,000 (less common)

Seal

Top 2,000 (common)C1verb
Most common: Seal
 Close the flapSeal
Pronunciation🇬🇧 //kləʊz ðə flæp//🇺🇸 //kloʊz ðə flæp//🇬🇧 /["/siːl/","/siːlz/","/siːld/","/ˈsiːlɪŋ/"]/🇺🇸 /["/siːl/","/siːlz/","/siːld/","/ˈsiːlɪŋ/"]/
MeaningShut the cover of something, like a bag or envelope.A sea animal that has flippers and can swim.
ExamplePlease close the flap before you put the bag away.Please seal the envelope before you mail it to ensure the contents don't fall out.
RegisterNeutralNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
CEFR level-C1
Part of speechverb
Collocationsclose the door, close the book, close the lid, close the bagcarefully, properly, tightly, from, with, carefully, properly, tightly, from, with
Antonyms-open, unseal, uncover
Common mistakesUsing 'close' with a noun that doesn't need it, like 'the door shut'., Confused with 'open the flap' instead of 'close'.Confused with 'ceal' — make sure to remember the correct spelling., Using 'seal' when they mean 'sign' or 'approval'., Mispronouncing the word, often saying it like 'see-al'.
Usage notesUse 'close the flap' when referring to a physical cover. It is suitable in casual and instructional contexts, but may not be formal.Use 'seal' when referring to the animal or when discussing sealing something in a formal context. Avoid using in informal conversations unless referring to the animal.

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Close the flap

Frequently asked questions: Close the flap vs Seal

What's the difference between Close the flap and Seal?

Close the flap: Shut the cover of something, like a bag or envelope. Seal: A sea animal that has flippers and can swim.

Which is more common: Close the flap and Seal?

Seal is the most common in everyday English.

Can you show an example of each?

Close the flap: Please close the flap before you put the bag away. Seal: Please seal the envelope before you mail it to ensure the contents don't fall out.

Can I use Close the flap and Seal interchangeably?

Not always. Close the flap and Seal 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.

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