Pinus sylvestris vs pine

Pinus sylvestris and pine both are nouns.

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

As nouns, pine is a hypernym of Pinus sylvestris; that is, pine is a word with a broader meaning than Pinus sylvestris:

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

Other hypernyms of Pinus sylvestris include pine tree, true pine.

Pinus sylvestris (noun)	pine (noun)
medium large two-needled pine of northern Europe and Asia having flaking red-brown bark	a coniferous tree
	straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus Pinus

Pinus sylvestris (verb)	pine (verb)
	have a desire for something or someone who is not present