Emphatic pronouns and reflexive pronouns are both types of pronouns in English grammar, but they serve different purposes.
Emphatic pronouns are used for emphasis to add stress to the noun or pronoun to which they refer. Examples of emphatic pronouns are "himself", "herself", "itself", "myself", "yourself", "ourselves", "yourselves", and "themselves". For example, "I myself saw the accident."
Reflexive pronouns are used when the object of a sentence is the same as the subject. They reflect back to the subject of the sentence and are formed by adding "-self" to personal pronouns (for example, "myself") or "-selves" to plural personal pronouns (for example, "ourselves"). For example, "She hurt herself while cooking."
In summary, the difference between the two is that reflexive pronouns are used to reflect the action of the verb back to the subject, while emphatic pronouns are used for emphasis to add stress to the noun or pronoun