onslaught vs assault

onslaught and assault both are nouns.

Word	Noun	Adjective	Verb	Adverb
onslaught	Yes	No	No	No
assault	Yes	No	Yes	No

onslaught (noun)	assault (noun)
(military) an offensive against an enemy (using weapons)	close fighting during the culmination of a military attack
the rapid and continuous delivery of linguistic communication (spoken or written)	a threatened or attempted physical attack by someone who appears to be able to cause bodily harm if not stopped
a sudden and severe onset of trouble	the crime of forcing a person to submit to sexual intercourse against his or her will

onslaught (verb)	assault (verb)
	attack in speech or writing
	attack someone physically or emotionally
	force (someone) to have sex against their will