constitutionalist vs constitutionalism

constitutionalist and constitutionalism both are nouns.

Word	Noun	Adjective	Verb	Adverb
constitutionalist	Yes	No	No	No
constitutionalism	Yes	No	No	No

constitutionalist (noun)	constitutionalism (noun)
an advocate of constitutional government	advocacy of a system of government according to constitutional principles
	a constitutional system of government (usually with a written constitution)