coif vs bob

coif and bob both are nouns.

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

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

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

Other hyponyms of coif include wave.

coif (noun)	bob (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 short abrupt inclination (as of the head)
the arrangement of the hair (especially a woman's hair)	a short or shortened tail of certain animals
	a small float usually made of cork; attached to a fishing line
	a hanging weight, especially a metal ball on a string
	a long racing sled (for 2 or more people) with a steering mechanism
	a hair style for women and children; a short haircut all around
	a former monetary unit in Great Britain

coif (verb)	bob (verb)
arrange attractively	cut hair in the style of a bob
cover with a coif	make a curtsy; usually done only by girls and women; as a sign of respect
	remove or shorten the tail of an animal
	move up and down repeatedly in a quick, short movement
	ride a bobsled