garbage disposal vs disposal

garbage disposal and disposal both are nouns.

Word	Noun	Adjective	Verb	Adverb
garbage disposal	Yes	No	No	No
disposal	Yes	No	No	No

As nouns, garbage disposal and disposal are synonyms defined as:

garbage disposal and disposal: a kitchen appliance for disposing of garbage

Other synonyms of garbage disposal include electric pig.

garbage disposal (noun)	disposal (noun)
a kitchen appliance for disposing of garbage	the act or means of getting rid of something
	a method of tending to or managing the affairs of some group of people (especially the group's business affairs)
	a kitchen appliance for disposing of garbage
	the power to use something or someone