pedunculate oak vs common oak

pedunculate oak and common oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
pedunculate oak	Yes	No	No	No
common oak	Yes	No	No	No

As nouns, pedunculate oak and common oak are synonyms defined as:

pedunculate oak and common oak: medium to large deciduous European oak having smooth leaves with rounded lobes; yields hard strong light-colored wood

Other synonyms of pedunculate oak include English oak, Quercus robur.

pedunculate oak (noun)	common oak (noun)
medium to large deciduous European oak having smooth leaves with rounded lobes; yields hard strong light-colored wood	medium to large deciduous European oak having smooth leaves with rounded lobes; yields hard strong light-colored wood