coif vs beehive

coif and beehive both are nouns.

Word	Noun	Adjective	Verb	Adverb
coif	Yes	No	Yes	No
beehive	Yes	No	No	No

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

coif (noun)	beehive (noun)
a skullcap worn by nuns under a veil or by soldiers under a hood of mail or formerly by British sergeants-at-law	a man-made receptacle that houses a swarm of bees
the arrangement of the hair (especially a woman's hair)	any workplace where people are very busy
	a hairdo resembling a beehive
	a structure that provides a natural habitation for bees; as in a hollow tree

coif (verb)	beehive (verb)
arrange attractively
cover with a coif