blowup vs outburst

blowup and outburst both are nouns.

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

As nouns, blowup and outburst are synonyms defined as:

Other synonyms of blowup include ebullition, effusion, gush.

blowup (noun)	outburst (noun)
a photographic print that has been enlarged	a sudden violent disturbance
an unrestrained expression of emotion	an unrestrained expression of emotion
a violent release of energy caused by a chemical or nuclear reaction	a sudden intense happening