Yes, in fact it should only be used as a noun, and never as an adjective. Furthermore, it's more common as a plural noun.
In the singular, English prefers use of the adjective Jewish: Jewish person (not Jew).
Yes, Jew is a proper noun (being the name of an ethnic group).
Yes, the word Jew is a proper noun, the name of a specific group of people. A proper noun it the name of a person, place, thing, or a title; a Jew is a person.
No, Jew is the noun, Jewish is the adjective.
Jewish is an adjective. "The Jewish people." Jew is the noun. "Einstein was a Jew."
For most Jews, it does not matter whether or not you refer to them as Jewish people or as Jews. What matters is whether you do so politely or derisively. The difference between the terms Jewish and Jew is that Jewish is the derivative adjective while Jew is the noun. It is the same as: Spanish is the derivative adjective while Spaniard is the noun.
It's not used very often these days as it is highly offensive, but the feminine plural noun version of the word Jew is Jewesses. (The singular is Jewess.)
A "Constructional Jew" is a Jew who's constructed to be a Jew.
yes she is the biggest jew in jew beliefs
yep, she's a Jewish jewdy Jew (Jew)
a Jew?
No, he's not a Jew
He is a Jew.
her doctor was a Jew and she died and Hitler blamed the Jew