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"Cuesta" is a form of "cuesta", a noun which is often translated as "slope". "Colina" is a noun which is often translated as "hill". Learn more about the difference between "cuesta" and "colina" below.
la cuesta(
kwehs
-
tah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
la colina(
koh
-
lee
-
nah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).