gush vs outburst

gush and outburst both are nouns.

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

As nouns, gush and outburst are synonyms defined as:

Other synonyms of gush include blowup, ebullition, effusion.

gush (noun)	outburst (noun)
an unrestrained expression of emotion	a sudden violent disturbance
a sudden rapid flow (as of water)	an unrestrained expression of emotion
	a sudden intense happening

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