California live oak vs live oak

California live oak and live oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
California live oak	Yes	No	No	No
live oak	Yes	No	No	No

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

California live oak: highly variable often shrubby evergreen oak of coastal zone of western North America having small thick usually spiny-toothed dark-green leaves
live oak: any of several American evergreen oaks

California live oak (noun)	live oak (noun)
highly variable often shrubby evergreen oak of coastal zone of western North America having small thick usually spiny-toothed dark-green leaves	any of several American evergreen oaks