zoological science vs naturalist

zoological science and naturalist both are nouns.

Word	Noun	Adjective	Verb	Adverb
zoological science	Yes	No	No	No
naturalist	Yes	No	No	No

zoological science (noun)	naturalist (noun)
the branch of biology that studies animals	a biologist knowledgeable about natural history (especially botany and zoology)
	an advocate of the doctrine that the world can be understood in scientific terms