Pinus sylvestris vs Scotch pine

Pinus sylvestris and Scotch pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pinus sylvestris	Yes	No	No	No
Scotch pine	Yes	No	No	No

As nouns, Pinus sylvestris and Scotch pine are synonyms defined as:

Pinus sylvestris and Scotch pine: medium large two-needled pine of northern Europe and Asia having flaking red-brown bark

Other synonyms of Pinus sylvestris include Scotch fir, Scots pine.

Pinus sylvestris (noun)	Scotch pine (noun)
medium large two-needled pine of northern Europe and Asia having flaking red-brown bark	medium large two-needled pine of northern Europe and Asia having flaking red-brown bark