Scotch pine vs Scotch fir

Scotch pine and Scotch fir both are nouns.

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

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

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

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

Scotch pine (noun)	Scotch fir (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