Japanese oak vs Quercus grosseserrata

Japanese oak and Quercus grosseserrata both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japanese oak	Yes	No	No	No
Quercus grosseserrata	Yes	No	No	No

As nouns, Japanese oak and Quercus grosseserrata are synonyms defined as:

Japanese oak and Quercus grosseserrata: oak with moderately light fine-grained wood; Japan

Other synonyms of Japanese oak include Quercus mongolica.

Japanese oak (noun)	Quercus grosseserrata (noun)
small evergreen tree of China and Japan	oak with moderately light fine-grained wood; Japan
oak with moderately light fine-grained wood; Japan