cochin vs cochin china

cochin and cochin china both are nouns.

Word	Noun	Adjective	Verb	Adverb
cochin	Yes	No	No	No
cochin china	Yes	No	No	No

As nouns, cochin and cochin china are synonyms defined as:

cochin and cochin china: Asian breed of large fowl with dense plumage and feathered legs

cochin (noun)	cochin china (noun)
Asian breed of large fowl with dense plumage and feathered legs	Asian breed of large fowl with dense plumage and feathered legs