pouter vs pouter pigeon

pouter and pouter pigeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
pouter	Yes	No	No	No
pouter pigeon	Yes	No	No	No

As nouns, pouter and pouter pigeon are synonyms defined as:

pouter and pouter pigeon: one of a breed of pigeon that enlarge their crop until their breast is puffed out

pouter (noun)	pouter pigeon (noun)
one of a breed of pigeon that enlarge their crop until their breast is puffed out	one of a breed of pigeon that enlarge their crop until their breast is puffed out
someone with a habitually sullen or gloomy expression