area vs environment

area and environment both are nouns.

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

As nouns, environment is a hypernym of area; that is, environment is a word with a broader meaning than area:

area (noun)	environment (noun)
a part of a structure having some specific characteristic or function	the area in which something exists or lives
the extent of a 2-dimensional surface enclosed within a boundary	the totality of surrounding conditions
a part of an animal that has a special function or is supplied by a given artery or nerve
a subject of study
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)
a particular environment or walk of life