groove vs body part

groove and body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
groove	Yes	No	Yes	No
body part	Yes	No	No	No

As nouns, body part is a hypernym of groove; that is, body part is a word with a broader meaning than groove:

groove (noun)	body part (noun)
a settled and monotonous routine that is hard to escape	any part of an organism such as an organ or extremity
(anatomy) any furrow or channel on a bodily structure or part
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)	body part (verb)
hollow out in the form of a furrow or groove
make a groove in, or provide with a groove