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"Arete" is a form of "arete", a noun which is often translated as "earring". "Ceja" is a form of "ceja", a noun which is often translated as "eyebrow". Learn more about the difference between "arete" and "ceja" below.
el arete()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
la ceja()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).