set on vs assail

set on and assail both are verbs.

Word	Noun	Adjective	Verb	Adverb
set on	No	No	Yes	No
assail	No	No	Yes	No

As verbs, set on and assail are synonyms defined as:

Other synonyms of set on include assault, attack.

set on (verb)	assail (verb)
attack someone physically or emotionally	attack in speech or writing
	attack someone physically or emotionally
	launch an attack or assault on; begin hostilities or start warfare with