air hostess vs woman

air hostess and woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
air hostess	Yes	No	No	No
woman	Yes	No	No	No

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

Other hypernyms of air hostess include flight attendant, steward, adult female.

air hostess (noun)	woman (noun)
a woman steward on an airplane	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