husband vs cuckold

husband and cuckold both are nouns.

Word	Noun	Adjective	Verb	Adverb
husband	Yes	No	Yes	No
cuckold	Yes	No	Yes	No

As nouns, cuckold is a hyponym of husband; that is, cuckold is a word with a more specific, narrower meaning than husband:

Other hyponyms of husband include benedick, benedict, family man, house husband, househusband, uxoricide.

husband (noun)	cuckold (noun)
a married man; a woman's partner in marriage	a man whose wife committed adultery

husband (verb)	cuckold (verb)
use cautiously and frugally	be sexually unfaithful to one's partner in marriage