incendiarism vs fire-raising

incendiarism and fire-raising both are nouns.

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

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

Other synonyms of incendiarism include arson.

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