cellar vs wine cellar

cellar and wine cellar both are nouns.

Word	Noun	Adjective	Verb	Adverb
cellar	Yes	No	No	No
wine cellar	Yes	No	No	No

As nouns, cellar and wine cellar are synonyms defined as:

cellar (noun)	wine cellar (noun)
the lowermost portion of a structure partly or wholly below ground level; often used for storage	storage space where wines are stored
storage space where wines are stored
an excavation where root vegetables are stored