whiner vs complainer

whiner and complainer both are nouns.

Word	Noun	Adjective	Verb	Adverb
whiner	Yes	No	No	No
complainer	Yes	No	No	No

As nouns, whiner and complainer are synonyms defined as:

whiner and complainer: a person given to excessive complaints and crying and whining

Other synonyms of whiner include bellyacher, crybaby, grumbler, moaner, sniveller, squawker.

whiner (noun)	complainer (noun)
a person given to excessive complaints and crying and whining	a person given to excessive complaints and crying and whining