sensationalism vs unsensational

sensationalism is a noun but unsensational is not a noun.

Word	Noun	Adjective	Verb	Adverb
sensationalism	Yes	No	No	No
unsensational	No	Yes	No	No

sensationalism (noun)	unsensational (noun)
(philosophy) the doctrine that knowledge derives from experience
(philosophy) the ethical doctrine that feeling is the only criterion for what is good
the journalistic use of subject matter that appeals to vulgar tastes
subject matter that is calculated to excite and please vulgar tastes

sensationalism (adjective)	unsensational (adjective)
	not of such character as to arouse intense interest, curiosity, or emotional reaction