gator vs alligator

gator and alligator both are nouns.

Word	Noun	Adjective	Verb	Adverb
gator	Yes	No	No	No
alligator	Yes	No	Yes	No

As nouns, gator and alligator are synonyms defined as:

gator and alligator: either of two amphibious reptiles related to crocodiles but with shorter broader snouts

gator (noun)	alligator (noun)
either of two amphibious reptiles related to crocodiles but with shorter broader snouts	either of two amphibious reptiles related to crocodiles but with shorter broader snouts
	leather made from alligator's hide

gator (verb)	alligator (verb)
	crack and acquire the appearance of alligator hide, as from weathering or improper application; of paint and varnishes