outburst vs gush

outburst and gush both are nouns.

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

As nouns, outburst and gush are synonyms defined as:

Other synonyms of outburst include blowup, ebullition, effusion.

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

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