barrage vs shelling

barrage and shelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
barrage	Yes	No	Yes	No
shelling	Yes	No	No	No

As nouns, barrage and shelling are synonyms defined as:

barrage and shelling: the heavy fire of artillery to saturate an area rather than hit a specific target

Other synonyms of barrage include barrage fire, battery, bombardment.

barrage (noun)	shelling (noun)
the heavy fire of artillery to saturate an area rather than hit a specific target	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)

barrage (verb)	shelling (verb)
address with continuously or persistently, as if with a barrage