American language vs American English

American language and American English both are nouns.

Word	Noun	Adjective	Verb	Adverb
American language	Yes	No	No	No
American English	Yes	No	No	No

As nouns, American language and American English are synonyms defined as:

American language and American English: the English language as used in the United States

Other synonyms of American language include American.

American language (noun)	American English (noun)
the English language as used in the United States	the English language as used in the United States