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