outburst vs tumultuous disturbance

outburst and tumultuous disturbance both are nouns.

Word	Noun	Adjective	Verb	Adverb
outburst	Yes	No	No	No
tumultuous disturbance	Yes	No	No	No

As nouns, outburst and tumultuous disturbance are synonyms defined as:

outburst (noun)	tumultuous disturbance (noun)
a sudden violent disturbance	a sudden violent disturbance
an unrestrained expression of emotion
a sudden intense happening