proprietress vs owner

proprietress and owner both are nouns.

Word	Noun	Adjective	Verb	Adverb
proprietress	Yes	No	No	No
owner	Yes	No	No	No

As nouns, owner is a hypernym of proprietress; that is, owner is a word with a broader meaning than proprietress:

Other hypernyms of proprietress include proprietor, adult female, woman.

proprietress (noun)	owner (noun)
a woman proprietor	(law) someone who owns (is legal possessor of) a business
	a person who owns something