gush vs outpouring

gush and outpouring both are nouns.

Word	Noun	Adjective	Verb	Adverb
gush	Yes	No	Yes	No
outpouring	Yes	No	No	No

As nouns, gush and outpouring are synonyms defined as:

Other synonyms of gush include flush.

gush (noun)	outpouring (noun)
an unrestrained expression of emotion	a large flow
a sudden rapid flow (as of water)	the rapid and continuous delivery of linguistic communication (spoken or written)
	the pouring forth of a fluid
	a sudden rapid flow (as of water)
	a natural flow of ground water

gush (verb)	outpouring (verb)
praise enthusiastically
issue in a jet; come out in a jet; stream or spring forth
gush forth in a sudden stream or jet