The Spanish expression "puertas y ventanas" translates into English as windows and doors. The two nouns, puertas and ventanas, are commonly grouped together, as they are common additions to a building.
Puertas is the plural noun form of the Spanish word puerta, meaning door. The word is feminine and requires the changing of a complimentary adjective. For example, the word for wide is ancho, and the phrase "wide doors" would be "puertas anchas."
Similarly, ventanas is the plural noun form of the Spanish word ventana, meaning window. Additionally, any complimentary adjectives would change form to agree with the noun. For instance, the word for open is abierto, and "open windows" would translate as, "ventanas abiertas."