bombardment vs bombing

bombardment and bombing both are nouns.

Word	Noun	Adjective	Verb	Adverb
bombardment	Yes	No	No	No
bombing	Yes	No	No	No

As nouns, bombardment and bombing are synonyms defined as:

bombardment (noun)	bombing (noun)
the heavy fire of artillery to saturate an area rather than hit a specific target	an attack by dropping bombs
an attack by dropping bombs	the use of bombs for sabotage; a tactic frequently used by terrorists
the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
the rapid and continuous delivery of linguistic communication (spoken or written)