ironside vs adult male

ironside and adult male both are nouns.

Word	Noun	Adjective	Verb	Adverb
ironside	Yes	No	No	No
adult male	Yes	No	No	No

As nouns, adult male is a hypernym of ironside; that is, adult male is a word with a broader meaning than ironside:

Other hypernyms of ironside include man.

ironside (noun)	adult male (noun)
a man of great strength or bravery	an adult person who is male (as opposed to a woman)