QUICK ANSWER
"Lenguaje" is a noun which is often translated as "language", and "audición" is a noun which is often translated as "hearing". Learn more about the difference between "lenguaje" and "audición" below.
el lenguaje(
lehng
-
gwah
-
heh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (general)
a. language
El lenguaje utilizado por el autor refleja su preferencia por la cultura francesa.The language used by the author reflects his preference for French culture.
b. speech
La obra de Juan Rulfo logra capturar el lenguaje de los campesinos mexicanos.Juan Rulfo's writing manages to capture the speech of rural Mexican workers.
la audición(
ow
-
dee
-
syohn
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (sense)
a. hearing
Beethoven compuso esta obra antes de empezar a perder la audición.Beethoven composed this piece before starting losing his hearing.
a. audition
En la audición de canto, la voz me temblaba.My voice trembled during the singing audition.
a. audition
En la audición de esta noche, voy a interpretar la suite para chelo en sol mayor de Bach.At tonight's audition I'm going to play Bach's cello suite in G major.
4. (finance) (Caribbean)
Regionalism used in the Caribbean: Cuba, the Dominican Republic, and Puerto Rico
a. audit
El contador realizó una audición de las inversiones de la empresa.The accountant conducted an audit on the company's investments.