Quercus laurifolia vs oak

Quercus laurifolia and oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
Quercus laurifolia	Yes	No	No	No
oak	Yes	No	No	No

As nouns, oak is a hypernym of Quercus laurifolia; that is, oak is a word with a broader meaning than Quercus laurifolia:

Quercus laurifolia: large nearly semi-evergreen oak of southeastern United States; thrives in damp soil
oak: a deciduous tree of the genus Quercus; has acorns and lobed leaves

Other hypernyms of Quercus laurifolia include oak tree.

Quercus laurifolia (noun)	oak (noun)
large nearly semi-evergreen oak of southeastern United States; thrives in damp soil	a deciduous tree of the genus Quercus; has acorns and lobed leaves
	the hard durable wood of any oak; used especially for furniture and flooring