Spanish oak vs Quercus texana

Spanish oak and Quercus texana both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish oak	Yes	No	No	No
Quercus texana	Yes	No	No	No

As nouns, Spanish oak and Quercus texana are synonyms defined as:

Spanish oak and Quercus texana: small deciduous tree having the trunk branched almost from the base with spreading branches; Texas and southern Oklahoma

Spanish oak (noun)	Quercus texana (noun)
small deciduous tree having the trunk branched almost from the base with spreading branches; Texas and southern Oklahoma	small deciduous tree having the trunk branched almost from the base with spreading branches; Texas and southern Oklahoma