valley white oak vs valley oak

valley white oak and valley oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
valley white oak	Yes	No	No	No
valley oak	Yes	No	No	No

As nouns, valley white oak and valley oak are synonyms defined as:

valley white oak and valley oak: tall graceful deciduous California oak having leathery leaves and slender pointed acorns

Other synonyms of valley white oak include California white oak, Quercus lobata, roble.

valley white oak (noun)	valley oak (noun)
tall graceful deciduous California oak having leathery leaves and slender pointed acorns	tall graceful deciduous California oak having leathery leaves and slender pointed acorns