set afire vs set aflame

set afire and set aflame both are verbs.

Word	Noun	Adjective	Verb	Adverb
set afire	No	No	Yes	No
set aflame	No	No	Yes	No

As verbs, set afire and set aflame are synonyms defined as:

Other synonyms of set afire include set ablaze, set on fire.

set afire (verb)	set aflame (verb)
set fire to; cause to start burning	set fire to; cause to start burning