Scots pine vs Scotch pine

Scots pine and Scotch pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scots pine	Yes	No	No	No
Scotch pine	Yes	No	No	No

As nouns, Scots pine and Scotch pine are synonyms defined as:

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

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

Scots pine (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