conservative vs cautious

conservative and cautious both are nouns.

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

As adjectives, conservative and cautious are synonyms defined as:

conservative (noun)	cautious (noun)
a person who is reluctant to accept changes and new ideas	people who are fearful and cautious

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