married man vs benedick

married man and benedick both are nouns.

Word	Noun	Adjective	Verb	Adverb
married man	Yes	No	No	No
benedick	Yes	No	No	No

As nouns, benedick is a hyponym of married man; that is, benedick is a word with a more specific, narrower meaning than married man:

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

married man (noun)	benedick (noun)
a married man; a woman's partner in marriage	a newly married man (especially one who has long been a bachelor)