No, but it's part of a noun which the noun is the part of speech.
A proper noun.
Proper noun
Proper noun.
Proper noun
A noun, specifically a proper noun.
Television is a noun.
A noun, more particularly a proper noun.
It is a proper noun.
Britain is a proper noun.
Bethlehem is a proper noun.
Springfield is a proper noun.
Bronx is a proper noun.