environment vs domain

environment and domain both are nouns.

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

As nouns, domain is a hyponym of environment; that is, domain is a word with a more specific, narrower meaning than environment:

environment (noun)	domain (noun)
the area in which something exists or lives	the content of a particular field of knowledge
the totality of surrounding conditions	people in general; especially a distinctive group of people with some shared interest
	(mathematics) the set of values of the independent variable for which a function is defined
	territory over which rule or control is exercised
	a particular environment or walk of life