Pinus torreyana vs grey-leaf pine

Pinus torreyana and grey-leaf pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pinus torreyana	Yes	No	No	No
grey-leaf pine	Yes	No	No	No

As nouns, Pinus torreyana and grey-leaf pine are synonyms defined as:

Pinus torreyana and grey-leaf pine: medium-sized five-needled pine of southwestern California having long cylindrical cones

Other synonyms of Pinus torreyana include sabine pine, soledad pine, Torrey's pine, Torrey pine.

Pinus torreyana (noun)	grey-leaf pine (noun)
medium-sized five-needled pine of southwestern California having long cylindrical cones	medium-sized five-needled pine of southwestern California having long cylindrical cones