affenpinscher vs monkey dog

affenpinscher and monkey dog both are nouns.

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

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

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

Other synonyms of affenpinscher include monkey pinscher.

affenpinscher (noun)	monkey dog (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