married person vs relative

married person and relative both are nouns.

Word	Noun	Adjective	Verb	Adverb
married person	Yes	No	No	No
relative	Yes	Yes	No	No

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

Other hypernyms of married person include domestic partner, significant other, spousal equivalent, spouse equivalent, relation.

married person (noun)	relative (noun)
a person's partner in marriage	an animal or plant that bears a relationship to another (as related by common descent or by membership in the same genus)
	a person related by blood or marriage

married person (adjective)	relative (adjective)
	estimated by comparison; not absolute or complete
	properly related in size or degree or other measurable characteristics; usually followed by `to'