A noun names a person, place, thing, animal, or idea. (el sustantivo nombra...)
Alex had a party in his house yesterday.
The three nouns are highlighted with orange.
A pronoun renames a noun. (el pronombre renombra al sustantivo)
I, you, he, she, it, we, they
Carlos went to the park => He went to the park
Preguntas => firstname.lastname@example.org