vs 

QUICK ANSWER
"Cuando" is a form of "cuando", a conjunction which is often translated as "when". "Aún" is a form of "aún", an adverb which is often translated as "still". Learn more about the difference between "cuando" and "aún" below.
cuando(
kwahn
-
doh
)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. when (specific moment)
Cuando hace calor, nos gusta desayunar en el jardín.When it's hot, we like to have breakfast in the yard.
b. as (specific moment)
Justo cuando empezábamos a divertirnos, se cortó la luz.Just as we were starting to have fun, the lights went out.
c. whenever (unspecified moment)
Llámame cuando tengas ganas.Call me whenever you like.
a. if
Cuando se calla sobre el problema, es que debe de saber algo.If she remains silent about the problem, she must know something.
b. since
No sé por qué te sorprendes tanto cuando todo el mundo anda hablando del tema.I don't understand why you're so surprised, since everyone's speaking about the issue.
a. when
¡Le estás contando a todos que soy un mentiroso, cuando no es verdad!You are telling everybody that I'm a liar, when it's not true!
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. when
En primavera es cuando las flores florecen.Spring is when the flowers bloom.
a. even if
¿Por qué me mentiste cuando sabías que tarde o temprano me iba a enterar de la verdad?Why did you lie to me even if you knew that sooner or later I'd find out the truth?
b. even though
Tommy siguió insistiendo en ir al cine cuando los amigos ya habían decidido jugar fútbol.Tommy kept insisting on going to the cinema even though his friends had already decided to play soccer.
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
preposition
a. as
Cuando joven, Mimi era bellísima.As a young woman, Mimi was very beautiful.
b. during
Cuando la guerra, había toque de queda y no se podía salir de noche.During the war, there was a curfew and you couldn't go out at night.
Copyright © 2025 Dictionary Media Group, Inc.
aún(
ah
-
oon
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. still (in affirmative or interrogative phrases)
Mis papás aún están en el trabajo.My parents are still at work.
b. yet (in negative phrases)
Aún no hemos recibido el pedido.We haven't received the order yet.
a. even
Me encanta leer, pero salir me gusta más aún.I love reading, but I love going out even more.
Copyright © 2025 Dictionary Media Group, Inc.