Yes, the word American is a proper noun, a word for a person from the country of America.
The word American is also a proper adjective, a word to describe something as of or from the country of America.
"American" is most often an adjective, but can also be used as a noun, meaning resident and/or citizen of America.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
It's an adverb.
"Practice" is a verb in British English and an noun in American English.
freedom of speech and press
American Speech was created in 1925.
"American" is most often an adjective, but can also be used as a noun, meaning resident and/or citizen of America.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.