dirty dog vs stinker

dirty dog and stinker both are nouns.

Word	Noun	Adjective	Verb	Adverb
dirty dog	Yes	No	No	No
stinker	Yes	No	No	No

As nouns, dirty dog and stinker are synonyms defined as:

dirty dog and stinker: a person who is deemed to be despicable or contemptible

Other synonyms of dirty dog include bum, crumb, git, lowlife, puke, rat, rotter, scum bag, scumbag, skunk, so-and-so, stinkpot.

dirty dog (noun)	stinker (noun)
a person who is deemed to be despicable or contemptible	an artifact (especially an automobile) that is defective or unsatisfactory
	anything that gives off an offensive odor (especially a cheap cigar)
	a person who is deemed to be despicable or contemptible