also: ギヤ · ギアー · ギヤー
noun
Refers to a mechanical gear (toothed wheel) or, by extension, a gear system in vehicles, machinery, etc. Also used metaphorically for 'gear' in contexts like 'shifting gears' in work or life.
自転車のギアが壊れてしまった。
The bicycle's gear broke.
仕事のギアを上げて集中する。
I shift into a higher gear and concentrate on work.
Search-only kana form; not a standard spelling.
歯車 is the native Japanese word for a gear (toothed wheel), often used in technical or literal mechanical contexts. ギア is a loanword that can sound more modern or casual, and is also used in metaphorical expressions like 'shifting gears'.
Loanword from English 'gear'.