Yes it is called a proper noun.
Yes. Its not a proper noun though,so don't captilise it. A proper noun is someones name or a place.
A stage in something or someones growth or development
No. Her name is Kylie. (No comma needed.) My niece, Kylie, is four. (The commas are needed to set apart the appositive from the rest of the sentence. An appositive is a noun or noun phrase that renames another noun in the sentence. It is considered additional information because it is not grammatically necessary to the sentence.)
Someones last name.
Yes. Someones name can be buster.
Any word can be someones name. Its unique.
the name Mauro means the one that will always be friendly and someones handy man or someones right hand man
yes without there consent. or if used for illegal purpose.
No, its not. Tag means to just put someones name in someones picture.
Yeah mine.
no
yes