gazillion vs trillion

gazillion and trillion both are nouns.

Word	Noun	Adjective	Verb	Adverb
gazillion	Yes	No	No	No
trillion	Yes	Yes	No	No

As nouns, gazillion and trillion are synonyms defined as:

gazillion and trillion: a very large indefinite number (usually hyperbole)

Other synonyms of gazillion include bazillion, billion, jillion, million, zillion.

gazillion (noun)	trillion (noun)
a very large indefinite number (usually hyperbole)	the number that is represented as a one followed by 12 zeros
	the number that is represented as a one followed by 18 zeros in the UK
	a very large indefinite number (usually hyperbole)

gazillion (adjective)	trillion (adjective)
	one million million in the United States
	one quintillion in Great Britain