sourpuss vs pouter

sourpuss and pouter both are nouns.

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

As nouns, sourpuss and pouter are synonyms defined as:

sourpuss and pouter: someone with a habitually sullen or gloomy expression

Other synonyms of sourpuss include gloomy Gus, picklepuss.

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