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"Una" is a noun which is often translated as "one", and "uno" is an adjective which is also often translated as "one". Learn more about the difference between "una" and "uno" below.
la una(
oo
-
nah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (time)
uno(
oo
-
noh
)An adjective is a word that describes a noun (e.g., the big dog).
a. one
Me queda solo un dulce.I've only got one candy left.
Necesitamos una moneda más para completar el conjunto.We need one more coin to complete the set.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
A pronoun is a word that stands in for a noun (e.g., she).