land vs domain

land and domain both are nouns.

Word	Noun	Adjective	Verb	Adverb
land	Yes	No	Yes	No
domain	Yes	No	No	No

As nouns, land and domain are synonyms defined as:

Other synonyms of land include demesne.

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

Other hypernyms of land include area, arena, field, orbit, sphere.

land (noun)	domain (noun)
agriculture considered as an occupation or way of life	the content of a particular field of knowledge
a politically organized body of people under a single government	people in general; especially a distinctive group of people with some shared interest
the people who live in a nation or country	(mathematics) the set of values of the independent variable for which a function is defined
territory over which rule or control is exercised	territory over which rule or control is exercised
the territory occupied by a nation	a particular environment or walk of life
the solid part of the earth's surface
material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)
extensive landed property (especially in the country) retained by the owner for his own use
the land on which real estate is located
a domain in which something is dominant

land (verb)	domain (verb)
bring into a different state
reach or come to rest
cause to come to the ground
arrive on shore
bring ashore
shoot at and force to come down
deliver (a blow)