vs 

QUICK ANSWER
"En la fiesta" is a phrase which is often translated as "at the party", and "ayer" is an adverb which is often translated as "yesterday". Learn more about the difference between "en la fiesta" and "ayer" below.
en la fiesta(
ehn
 
lah
 
fyehs
-
tah
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. at the party
Bailé mucho en la fiesta, la música era genial.I danced a lot at the party. The music was great.
Copyright © 2025 Dictionary Media Group, Inc.
ayer(
ah
-
yehr
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. yesterday
Me siento mucho mejor hoy que ayer.I feel much better today than yesterday.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
2.
A word or phrase restricted in usage to literature or established writing (e.g., sex, once upon a time).
(literary)
(recent past)
a. yesteryear
A word or phrase restricted in usage to literature or established writing (e.g., sex, once upon a time).
(literary)
La vida simple del ayer que echamos tanto de menos.The simple life of yesteryear that we miss so much.
Copyright © 2025 Dictionary Media Group, Inc.