monkey dog vs affenpinscher

monkey dog and affenpinscher both are nouns.

Word	Noun	Adjective	Verb	Adverb
monkey dog	Yes	No	No	No
affenpinscher	Yes	No	No	No

As nouns, monkey dog and affenpinscher are synonyms defined as:

monkey dog and affenpinscher: European breed of small dog resembling a terrier with dark wiry hair and a tufted muzzle

Other synonyms of monkey dog include monkey pinscher.

monkey dog (noun)	affenpinscher (noun)
European breed of small dog resembling a terrier with dark wiry hair and a tufted muzzle	European breed of small dog resembling a terrier with dark wiry hair and a tufted muzzle