“Disc” and “disk” are word variants that both describe a flat, circular object. Unless you’re discussing optical vs. magnetic media, the word disk is more common for American English, while disc is the standard spelling for British English.

The difference between disk vs. disc has geographical and dialectical considerations. Making the correct choice for your audience, disk or disc, is important for your writing. Disk is preferred in American English, with a few exceptions. Disc is preferred in British English, with the exception of computer related references.