khanate vs demesne

khanate and demesne both are nouns.

Word	Noun	Adjective	Verb	Adverb
khanate	Yes	No	No	No
demesne	Yes	No	No	No

As nouns, demesne is a hypernym of khanate; that is, demesne is a word with a broader meaning than khanate:

Other hypernyms of khanate include domain, land.

khanate (noun)	demesne (noun)
the position of a khan	territory over which rule or control is exercised
the realm of a khan	extensive landed property (especially in the country) retained by the owner for his own use