vs
QUICK ANSWER
"Uno" is a form of "uno", an adjective which is often translated as "one". "Un" is an indefinite article which is often translated as "a". Learn more about the difference between "un" and "uno" below.
un(
oon
)An indefinite article is a word that indicates that a noun is not specific (e.g., a girl).
1. (singular)
b. an (before vowel sound)
Tienen una vieja cámara que todavía funciona.They have an old camera which is still working.
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).