Superfund site vs toxic site

Superfund site and toxic site both are nouns.

Word	Noun	Adjective	Verb	Adverb
Superfund site	Yes	No	No	No
toxic site	Yes	No	No	No

As nouns, Superfund site and toxic site are synonyms defined as:

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

Other synonyms of Superfund site include toxic waste area.

Superfund site (noun)	toxic site (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