hubby vs married person

hubby and married person both are nouns.

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

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

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

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