set aflame vs set afire

set aflame and set afire both are verbs.

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

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

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

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