monkey dog vs monkey pinscher

monkey dog and monkey pinscher both are nouns.

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

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

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

Other synonyms of monkey dog include affenpinscher.

monkey dog (noun)	monkey pinscher (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