Pronouns replace nouns, for example:
* Yo (I)
* Tú (you)
* Él (he)
* Ella (she)
* Ellos (they - masculine)
* Ellas (they - feminine)
Conjunctions like "y" connect words, phrases, or clauses, for example:
* "El perro y el gato" (The dog and the cat)
* "Ella come manzanas y bananas" (She eats apples and bananas)
* "Fuimos al cine y después al parque" (We went to the cinema and then to the park)
Let me know if you have any other Spanish grammar questions!