suffix [in nouns]
[Origin: -ic + -s (translating Greek -ika (plural))]
the scientific study or use of something
　linguistics (=the study of language)
　electronics (=the study or making of electronic equipment)
the actions typically done by someone with particular skills
　athletics (=running, jumping, throwing, etc)
　acrobatics
used to make nouns out of words ending in -ical or -ic
　the acoustics (=sound qualities) of the hall