litterer vs litter lout

litterer and litter lout both are nouns.

Word	Noun	Adjective	Verb	Adverb
litterer	Yes	No	No	No
litter lout	Yes	No	No	No

As nouns, litterer and litter lout are synonyms defined as:

litterer and litter lout: a person who litters public places with refuse

Other synonyms of litterer include litterbug.

litterer (noun)	litter lout (noun)
a person who litters public places with refuse	a person who litters public places with refuse