fire-raising vs incendiarism

fire-raising and incendiarism both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire-raising	Yes	No	No	No
incendiarism	Yes	No	No	No

As nouns, fire-raising and incendiarism are synonyms defined as:

Other synonyms of fire-raising include arson.

fire-raising (noun)	incendiarism (noun)
malicious burning to destroy property	malicious burning to destroy property