Jammu and Kashmir vs Kashmir

Jammu and Kashmir and Kashmir both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jammu and Kashmir	Yes	No	No	No
Kashmir	Yes	No	No	No

As nouns, Jammu and Kashmir and Kashmir are synonyms defined as:

Jammu and Kashmir and Kashmir: an area in southwestern Asia whose sovereignty is disputed between Pakistan and India

Other synonyms of Jammu and Kashmir include Cashmere.

Jammu and Kashmir (noun)	Kashmir (noun)
an area in southwestern Asia whose sovereignty is disputed between Pakistan and India	an area in southwestern Asia whose sovereignty is disputed between Pakistan and India