The form is "adjective subject pronoun". "Adjective" means that one's own attribute is an adjective. "Owner pronoun" means that you use it to refer to the owner. ? Mine? Your, his and her are possessive pronouns of adjectives.

Nouns are "nominal subject pronouns". "Noun" means that a person's attribute is a noun. As mentioned above, "owner pronoun" refers to the owner of something. Mine, yours, his and hers are nominal possessive pronouns.

The usage of form generation and name generation:

Behind most famous generations, there is one more tail S than the previous generation. If the form itself has a small tail S, then there is no need to add a tail after the name is generated, and an S is enough. For example, the difference between his-his, its-its form generation and name generation is:

1, there is a noun after substitution, and there is no noun after substitution.

2. "Form name" equals "name generation".

My bag = mine.

Their books = theirs.