waiter vs waitress

waiter and waitress both are nouns.

Word	Noun	Adjective	Verb	Adverb
waiter	Yes	No	No	No
waitress	Yes	No	Yes	No

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

Other hyponyms of waiter include carhop, counterperson, sommelier, wine steward, wine waiter.

waiter (noun)	waitress (noun)
a person whose occupation is to serve at table (as in a restaurant)	a woman waiter
a person who waits or awaits

waiter (verb)	waitress (verb)
	serve as a waiter or waitress in a restaurant