environmentalist vs conservationist

environmentalist and conservationist both are nouns.

Word	Noun	Adjective	Verb	Adverb
environmentalist	Yes	No	No	No
conservationist	Yes	No	No	No

As nouns, environmentalist and conservationist are synonyms defined as:

environmentalist and conservationist: someone who works to protect the environment from destruction or pollution

environmentalist (noun)	conservationist (noun)
someone who works to protect the environment from destruction or pollution	someone who works to protect the environment from destruction or pollution