fief vs landed estate

fief and landed estate both are nouns.

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

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

fief: a piece of land held under the feudal system
landed estate: extensive landed property (especially in the country) retained by the owner for his own use

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

fief (noun)	landed estate (noun)
a piece of land held under the feudal system	extensive landed property (especially in the country) retained by the owner for his own use