vs 

QUICK ANSWER
"Un" is an indefinite article which is often translated as "a", and "sesenta" is an adjective which is often translated as "sixty". Learn more about the difference between "un" and "sesenta" below.
un(
oon
)
An indefinite article is a word that indicates that a noun is not specific (e.g., a girl).
indefinite article
a. a
Había un coche estacionado en la puerta.There was a car parked at the gate.
b. an (before vowel sound)
Tienen una vieja cámara que todavía funciona.They have an old camera which is still working.
a. some
Compré unos libros muy interesantes.I bought some very interesting books.
Conseguí unas manzanas deliciosas en el mercado.I got some delicious apples at the market.
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. one
Solo queda un dulce en la caja.There's only one chocolate left in the box.
Copyright © 2025 Dictionary Media Group, Inc.
sesenta(
seh
-
sehn
-
tah
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. sixty
La ciudad está a unos sesenta kilómetros de aquí.The city is about sixty kilometers from here.
b. sixtieth (ordinal)
Hoy, la pareja feliz celebra su sesenta aniversario de bodas.Today, the happy couple celebrates their sixtieth wedding anniversary.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. sixty
Sesenta es un número par.Sixty is an even number.
a. sixties
El pueblo creció rápidamente durante los sesenta.The town grew rapidly during the sixties.
Copyright © 2025 Dictionary Media Group, Inc.