seigneury vs landed estate

seigneury and landed estate both are nouns.

Word	Noun	Adjective	Verb	Adverb
seigneury	Yes	No	No	No
landed estate	Yes	No	No	No

As nouns, landed estate is a hypernym of seigneury; that is, landed estate is a word with a broader meaning than seigneury:

seigneury: the estate of a seigneur
landed estate: extensive landed property (especially in the country) retained by the owner for his own use

Other hypernyms of seigneury include acres, demesne, estate, land.

seigneury (noun)	landed estate (noun)
the position and authority of a feudal lord	extensive landed property (especially in the country) retained by the owner for his own use
the estate of a seigneur