What is intensive and reflexive nouns

The intensive/reflexive pronouns include myself, yourself, himself, herself, itself, ourselves, yourselves, themselves. Furthermore, an intensive pronoun is defined as a pronoun that ends in "self" or "selves" and places emphasis on its antecedent.

An intensive pronoun is almost identical to a reflexive pronoun, but their functions differ. Intensive pronouns are used to add emphasis to the subject or antecedent of the sentence ... The intensive/reflexive pronouns include myself, yourself, himself, herself, itself, ourselves, yourselves, themselves.