York vs dynasty

York and dynasty both are nouns.

Word	Noun	Adjective	Verb	Adverb
York	Yes	No	No	No
dynasty	Yes	No	No	No

As nouns, dynasty is a hypernym of York; that is, dynasty is a word with a broader meaning than York:

York: the English royal house (a branch of the Plantagenet line) that reigned from 1461 to 1485; its emblem was a white rose
dynasty: a sequence of powerful leaders in the same family

Other hypernyms of York include royal family, royal house, royal line, royalty.

York (noun)	dynasty (noun)
the English royal house (a branch of the Plantagenet line) that reigned from 1461 to 1485; its emblem was a white rose	a sequence of powerful leaders in the same family