Quercus lobata vs roble

Quercus lobata and roble both are nouns.

Word	Noun	Adjective	Verb	Adverb
Quercus lobata	Yes	No	No	No
roble	Yes	No	No	No

As nouns, Quercus lobata and roble are synonyms defined as:

Quercus lobata and roble: tall graceful deciduous California oak having leathery leaves and slender pointed acorns

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

Quercus lobata (noun)	roble (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
	large tree of Trinidad and Guyana having odd-pinnate leaves and violet-scented axillary racemes of yellow flowers and long smooth pods; grown as a specimen in parks and large gardens