monument vs land site

monument and land site both are nouns.

Word	Noun	Adjective	Verb	Adverb
monument	Yes	No	No	No
land site	Yes	No	No	No

As nouns, land site is a hypernym of monument; that is, land site is a word with a broader meaning than monument:

monument: an important site that is marked and preserved as public property
land site: the piece of land on which something is located (or is to be located)

Other hypernyms of monument include site.

monument (noun)	land site (noun)
a structure erected to commemorate persons or events	the piece of land on which something is located (or is to be located)
a burial vault (usually for some famous person)
an important site that is marked and preserved as public property