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"Yo" is a pronoun which is often translated as "I", and "mi hermano" is a phrase which is often translated as "my brother". Learn more about the difference between "yo" and "mi hermano" below.
yo()
A pronoun is a word that stands in for a noun (e.g., she).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
3. (psychology)
mi hermano()
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)