Sigh. Its quite depressing to see Americans rely on brand names rather than the original meaning of the word.
It would almost make you want to take an Advil.
It would almost make you want to take an Advil.
Given that "cotton bud" appears to be a relatively recent British quirk (gaining popularity in the last couple decades), I would submit that "cotton swab" is the original and proper generic term.
British English: https://books.google.com/ngrams/graph?content=cotton+swab%2C...
American English: https://books.google.com/ngrams/graph?content=cotton+swab%2C...
English overall: https://books.google.com/ngrams/graph?content=cotton+swab%2C...
(Refresh the page if the graph doesn't load at first.)
Why would it be "quite depressing" if Americans call them Q-tips or "cotton buds" or any number of a dozen other things.