Truman is a name, so therefore as a part of speech it is a proper noun.
noun
"Pittsburgh" is a proper noun.
Texas is a proper noun.
Halloween (also spelled Hallowe'en) is a noun. Specifically, it is a proper noun.
Truman is a name, so therefore as a part of speech it is a proper noun.
A noun, specifically a proper noun.
Proper noun
A proper noun.
Proper noun.
Proper noun
Television is a noun.
A noun, more particularly a proper noun.
noun
It is a proper noun.
Proper name, noun
It's a proper noun