plant scientist vs phytologist

plant scientist and phytologist both are nouns.

Word	Noun	Adjective	Verb	Adverb
plant scientist	Yes	No	No	No
phytologist	Yes	No	No	No

As nouns, plant scientist and phytologist are synonyms defined as:

plant scientist and phytologist: a biologist specializing in the study of plants

Other synonyms of plant scientist include botanist.

plant scientist (noun)	phytologist (noun)
a biologist specializing in the study of plants	a biologist specializing in the study of plants