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"Ayer" is an adverb which is often translated as "yesterday", and "en la fiesta" is a phrase which is often translated as "at the party". Learn more about the difference between "ayer" and "en la fiesta" below.
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.
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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.
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