son of a bitch vs whoreson

son of a bitch and whoreson both are nouns.

Word	Noun	Adjective	Verb	Adverb
son of a bitch	Yes	No	No	No
whoreson	Yes	No	No	No

As nouns, son of a bitch and whoreson are synonyms defined as:

son of a bitch and whoreson: insulting terms of address for people who are stupid or irritating or ridiculous

Other synonyms of son of a bitch include asshole, bastard, cocksucker, dickhead, mother fucker, motherfucker, prick, shit, SOB.

son of a bitch (noun)	whoreson (noun)
insulting terms of address for people who are stupid or irritating or ridiculous	the illegitimate offspring of unmarried parents
	insulting terms of address for people who are stupid or irritating or ridiculous