vs
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"Uvas" is a form of "uva", a noun which is often translated as "grape". "Naranja" is a noun which is often translated as "orange". Learn more about the difference between "naranja" and "uvas" below.
la naranja()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
la uva()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).