toxic site vs toxic waste area

toxic site and toxic waste area both are nouns.

Word	Noun	Adjective	Verb	Adverb
toxic site	Yes	No	No	No
toxic waste area	Yes	No	No	No

As nouns, toxic site and toxic waste area are synonyms defined as:

toxic site and toxic waste area: a site where toxic wastes have been dumped and the Environmental Protection Agency has designated them to be cleaned up

Other synonyms of toxic site include Superfund site.

toxic site (noun)	toxic waste area (noun)
a site where toxic wastes have been dumped and the Environmental Protection Agency has designated them to be cleaned up	a site where toxic wastes have been dumped and the Environmental Protection Agency has designated them to be cleaned up