groom vs coiffure

groom and coiffure both are nouns.

Word	Noun	Adjective	Verb	Adverb
groom	Yes	No	Yes	No
coiffure	Yes	No	Yes	No

As verbs, coiffure is a hyponym of groom; that is, coiffure is a word with a more specific, narrower meaning than groom:

groom (noun)	coiffure (noun)
a man who has recently been married	the arrangement of the hair (especially a woman's hair)
someone employed in a stable to take care of the horses
a man participant in his own marriage ceremony

groom (verb)	coiffure (verb)
care for one's external appearance	arrange attractively
give a neat appearance to
educate for a future role or function