SOB vs son of a bitch

SOB and son of a bitch both are nouns.

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

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

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

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

SOB (noun)	son of a bitch (noun)
insulting terms of address for people who are stupid or irritating or ridiculous	insulting terms of address for people who are stupid or irritating or ridiculous
a dyspneic condition