groove vs quirk

groove and quirk both are nouns.

Word	Noun	Adjective	Verb	Adverb
groove	Yes	No	Yes	No
quirk	Yes	No	Yes	No

As nouns, quirk is a hyponym of groove; that is, quirk is a word with a more specific, narrower meaning than groove:

groove: a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
quirk: a narrow groove beside a beading

Other hyponyms of groove include dado, flute, fluting, rabbet, rebate, track, rut, stria, striation, washout.

groove (noun)	quirk (noun)
a settled and monotonous routine that is hard to escape	a narrow groove beside a beading
(anatomy) any furrow or channel on a bodily structure or part	a strange attitude or habit
a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)

groove (verb)	quirk (verb)
hollow out in the form of a furrow or groove	twist or curve abruptly
make a groove in, or provide with a groove