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"Obra" is a form of "obra", a noun which is often translated as "work". "Vida" is a noun which is often translated as "life". Learn more about the difference between "vida" and "obra" below.
la vida(
bee
-
dah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (existence)
a. life 
Quiero que mi vida esté llena de aventura y amor.I want my life to be filled with adventure and love.
2. (livelihood)
a. living 
Ellos se ganan la vida escribiendo un diccionario.They make a living writing a dictionary.
3. (vitality)
a. life 
Era una persona muy activa y siempre llena de vida.She was a very active person and always full of life.
4. (lifetime)
a. life span 
La vida de una mariposa puede ser de una semana.The life span of a butterfly can be one week.
la obra(
oh
-
brah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
a. work 
Vimos una obra de El Greco cuando fuimos a Toledo.We saw a work by El Greco when we went to Toledo.
b. book  (literature)
Esta obra de poemas fue escrita por Federico García Lorca.This book of poetry was written by Federico Garcia Lorca.
c. opus 
¿Cómo se llama esta obra? - Es "El Danubio azul" de Strauss.What's the name of this opus? - It's Strauss's "The Blue Danube."
2. (theater)
a. play 
Mi obra preferida de Shakespeare es "Sueño de una noche de verano".My favorite Shakespearean play is "A Midsummer Night's Dream."
a. work 
Los laberintos y las bibliotecas aparecen mucho en la obra de Jorge Luis Borges.Labyrinths and libraries appear often in the work of Jorge Luis Borges.
4. (moral act)
a. deed 
La monja fue reconocida por las Naciones Unidas por las obras buenas que hizo en Haití.The nun was recognized by the United Nations for the good deeds she performed in Haiti.
a. construction work 
Mañana comienzan una obra cerca de la casa de mi tía.Tomorrow they're starting construction work near my aunt's house.
b. building work 
La obra está proyectada para terminar el mes que viene.The building work is due to finish next month.
6. (work site)
a. construction site 
Me llevaron a ver la obra para ver qué tanto habían avanzado.They took me to see the construction site so I could see how far along they were.
b. building site 
Solo las personas autorizadas pueden entrar a la obra.Only authorized personnel may enter the building site.
a. workmanship 
La obra de estos alebrijes está impresionante.The workmanship on these carved animal figures is impressive.