land tenure vs copyhold

land tenure and copyhold both are nouns.

Word	Noun	Adjective	Verb	Adverb
land tenure	Yes	No	No	No
copyhold	Yes	No	No	No

As nouns, copyhold is a hyponym of land tenure; that is, copyhold is a word with a more specific, narrower meaning than land tenure:

land tenure: the right to hold property; part of an ancient hierarchical system of holding lands
copyhold: a medieval form of land tenure in England; a copyhold was a parcel of land granted to a peasant by the lord of the manor in return for agricultural services

Other hyponyms of land tenure include freehold, villeinage.

land tenure (noun)	copyhold (noun)
the right to hold property; part of an ancient hierarchical system of holding lands	a medieval form of land tenure in England; a copyhold was a parcel of land granted to a peasant by the lord of the manor in return for agricultural services