conservative vs conventional

conservative is a noun but conventional is not a noun.

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

conservative (noun)	conventional (noun)
a person who is reluctant to accept changes and new ideas

conservative (adjective)	conventional (adjective)
resistant to change, particularly in relation to politics or religion	following accepted customs and proprieties
unimaginatively conventional	unimaginative and conformist
conforming to the standards and conventions of the middle class	(weapons) using energy for propulsion or destruction that is not nuclear energy
avoiding excess	rigidly formal or bound by convention
having social or political views favoring conservatism	represented in simplified or symbolic form
	conforming with accepted standards
	in accord with or being a tradition or practice accepted from the past