maid of honor vs woman

maid of honor and woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
maid of honor	Yes	No	No	No
woman	Yes	No	No	No

As nouns, woman is a hypernym of maid of honor; that is, woman is a word with a broader meaning than maid of honor:

Other hypernyms of maid of honor include attendant, attender, tender, adult female.

maid of honor (noun)	woman (noun)
an unmarried woman who attends the bride at a wedding	women as a class
	an adult female person (as opposed to a man)
	a female person who plays a significant role (wife or mistress or girlfriend) in the life of a particular man