Chinese cork oak vs oak

Chinese cork oak and oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chinese cork oak	Yes	No	No	No
oak	Yes	No	No	No

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

Chinese cork oak: medium to large deciduous tree of China, Japan, and Korea having thick corky bark
oak: a deciduous tree of the genus Quercus; has acorns and lobed leaves

Other hypernyms of Chinese cork oak include oak tree.

Chinese cork oak (noun)	oak (noun)
medium to large deciduous tree of China, Japan, and Korea having thick corky bark	a deciduous tree of the genus Quercus; has acorns and lobed leaves
	the hard durable wood of any oak; used especially for furniture and flooring