conservative vs conservativism

conservative and conservativism both are nouns.

Word	Noun	Adjective	Verb	Adverb
conservative	Yes	Yes	No	No
conservativism	Yes	No	No	No

conservative (noun)	conservativism (noun)
a person who is reluctant to accept changes and new ideas	a political or theological orientation advocating the preservation of the best in society and opposing radical changes

conservative (adjective)	conservativism (adjective)
resistant to change, particularly in relation to politics or religion
unimaginatively conventional
conforming to the standards and conventions of the middle class
avoiding excess
having social or political views favoring conservatism