Pluteus magnus vs sawdust mushroom

Pluteus magnus and sawdust mushroom both are nouns.

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

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

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

Pluteus magnus (noun)	sawdust mushroom (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