sawdust mushroom vs Pluteus magnus

sawdust mushroom and Pluteus magnus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sawdust mushroom	Yes	No	No	No
Pluteus magnus	Yes	No	No	No

As nouns, sawdust mushroom and Pluteus magnus are synonyms defined as:

sawdust mushroom and Pluteus magnus: an edible agaric found in piles of hardwood sawdust; the caps are black and coarsely wrinkled

sawdust mushroom (noun)	Pluteus magnus (noun)
an edible agaric found in piles of hardwood sawdust; the caps are black and coarsely wrinkled	an edible agaric found in piles of hardwood sawdust; the caps are black and coarsely wrinkled