lash out vs barrage

lash out is not a noun while barrage is a noun.

Word	Noun	Adjective	Verb	Adverb
lash out	No	No	Yes	No
barrage	Yes	No	Yes	No

As verbs, barrage is a hyponym of lash out; that is, barrage is a word with a more specific, narrower meaning than lash out:

Other hyponyms of lash out include abuse, blackguard, clapperclaw, shout, claw, vitriol, rip, whang, bombard, blister, scald, scorch, whip, rubbish.

lash out (noun)	barrage (noun)
	the heavy fire of artillery to saturate an area rather than hit a specific target
	the rapid and continuous delivery of linguistic communication (spoken or written)

lash out (verb)	barrage (verb)
attack in speech or writing	address with continuously or persistently, as if with a barrage