Disc vs Disk

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

Disc

Top 2,000 (common)B2noun

Disk

Top 1,000 (very common)B2noun
Most common: Disk
 DiscDisk
Pronunciation🇬🇧 /["/dɪsk/"]/🇺🇸 /["/dɪsk/"]/🇬🇧 /["/dɪsk/"]/🇺🇸 /["/dɪsk/"]/
MeaningA flat, round object.A flat, round object that can store data or sound.
ExampleHe threw the disc across the field during the ultimate frisbee game.I need to buy a new disk to store all of my music files.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2B2
Part of speechnounnoun
Collocationscompact, DVD, vinyl, play, insert, hear, on (a/​the) disc, disc of, compact, DVD, vinyl, play, insert, hear, on (a/​the) disc, disc of, herniated, prolapsed, slipped, slipcomputer, hard, CD-ROM, insert, put in, remove, contain something, hold something, capacity, space, drive, from disk, on (a/​the) disk, onto disk, computer, hard, CD-ROM, insert, put in, remove, contain something, hold something, capacity, space, drive, from disk, on (a/​the) disk, onto disk
Antonymsdiscourage, dissuadesolid, cube
Common mistakesConfused with 'disk' which is often a spelling used in computing., Using 'disc' for digital storage when 'disk' is more common., Mispronouncing the word as 'disk' instead of 'disc' in contexts referring to non-digital items.Confused with 'disk' vs 'disc' - disc often refers to music formats., Using 'disk' to mean 'drive' when referring to larger storage devices., Pronouncing it incorrectly, especially the 'k' sound at the end.
Usage notesUsed in various contexts like music (CDs), sports (frisbee), or technology (hard drives). Generally appropriate in everyday conversations but can be more technical in specific contexts.Used commonly in technology and storage contexts. Not appropriate for informal conversations unless referring to specific devices. Often understood better in technical fields.

Frequently asked questions: Disc vs Disk

What's the difference between Disc and Disk?

Disc: A flat, round object. Disk: A flat, round object that can store data or sound.

Which is more common: Disc and Disk?

Disk is the most common in everyday English.

Are Disc and Disk the same CEFR level?

Disc: B2, Disk: B2 on the CEFR scale.

Can I use Disc and Disk interchangeably?

Not always. Disc and Disk 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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