married woman vs partner

married woman and partner both are nouns.

Word	Noun	Adjective	Verb	Adverb
married woman	Yes	No	No	No
partner	Yes	No	Yes	No

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

Other hypernyms of married woman include better half, married person, mate, spouse, adult female, woman.

married woman (noun)	partner (noun)
a married woman; a man's partner in marriage	an associate in an activity or endeavor or sphere of common interest
	a person's partner in marriage
	a person who is a member of a partnership

married woman (verb)	partner (verb)
	provide with a partner
	act as a partner