phytologist vs plant scientist

phytologist and plant scientist both are nouns.

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

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

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

Other synonyms of phytologist include botanist.

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