husband vs married person

husband and married person both are nouns.

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

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

Other hypernyms of husband include adult male, man, better half, mate, partner, spouse.

husband (noun)	married person (noun)
a married man; a woman's partner in marriage	a person's partner in marriage

husband (verb)	married person (verb)
use cautiously and frugally