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"Oído" is a form of "oído", a noun which is often translated as "ear". "Vista" is a form of "vista", a noun which is often translated as "view". Learn more about the difference between "oído" and "vista" below.
el oído()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
la vista()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
