woman's hat vs cloche

woman's hat and cloche both are nouns.

Word	Noun	Adjective	Verb	Adverb
woman's hat	Yes	No	No	No
cloche	Yes	No	No	No

As nouns, cloche is a hyponym of woman's hat; that is, cloche is a word with a more specific, narrower meaning than woman's hat:

Other hyponyms of woman's hat include church hat, picture hat, pillbox, toque, turban.

woman's hat (noun)	cloche (noun)
hats for women; the wares sold by a milliner	a woman's close-fitting hat that resembles a helmet
	a low transparent cover put over young plants to protect them from cold