incendiary vs seditious

incendiary is a noun but seditious is not a noun.

Word	Noun	Adjective	Verb	Adverb
incendiary	Yes	Yes	No	No
seditious	No	Yes	No	No

As adjectives, incendiary and seditious are synonyms defined as:

Other synonyms of incendiary include incitive, inflammatory, instigative, rabble-rousing.

incendiary (noun)	seditious (noun)
a bomb that is designed to start fires; is most effective against flammable targets (such as fuel)
a criminal who illegally sets fire to property

incendiary (adjective)	seditious (adjective)
involving deliberate burning of property	in opposition to a civil authority or government
capable of catching fire spontaneously or causing fires or burning readily	arousing to action or rebellion
arousing to action or rebellion