How to Say "duty" in Spanish
The most common Spanish word for “duty” is “deber” — use 'deber' when referring to a moral or ethical obligation, a sense of what is right to do.
deber
deh-BEHRdeˈβeɾ

Examples
Cumplir con su deber es un orgullo.
Fulfilling one's duty is a source of pride.
Tengo muchos deberes para este fin de semana.
I have a lot of homework this weekend.
Lo hizo por puro sentido del deber.
He did it out of a pure sense of duty.
Gender and Number
'Deber' as a noun is masculine. When meaning 'homework' or 'chores,' it is almost always used in the plural: 'los deberes'.
Using 'Deber' instead of 'Tarea'
Mistake: “If you are in Latin America, 'tarea' is often the preferred word for school homework.”
Correction: 'Deberes' for homework is common in Spain. Use 'tarea' across all regions for school assignments.
obligación
Examples
Pagar los impuestos es una obligación legal para todos.
Paying taxes is a legal obligation for everyone.
función
Examples
La función principal de este botón es encender la máquina.
The main function of this button is to turn on the machine.
servicio
ser-BEE-syoseɾˈbi.sjo

Examples
El servicio al cliente en esa tienda es fantástico.
The customer service in that store is fantastic.
Los servicios de emergencia llegaron en cinco minutos.
The emergency services arrived in five minutes.
El hotel ofrece servicio de habitaciones las 24 horas.
The hotel offers 24-hour room service.
impuesto
im-pweh-stohimˈpwesto

Examples
Tengo que pagar el impuesto de la renta mañana.
I have to pay my income tax tomorrow.
El gobierno anunció un nuevo impuesto sobre el plástico.
The government announced a new tax on plastic.
Muchos ciudadanos se quejan de que los impuestos son demasiado altos.
Many citizens complain that taxes are too high.
Always Masculine
When you mean 'tax', the word is always masculine (el impuesto), even if the tax is on something that sounds feminine.
Talking about taxes in general
In Spanish, we usually use the plural 'los impuestos' when talking about the general system or the concept of paying taxes.
Confusing with 'Tasa'
Mistake: “Using 'impuesto' for a small service fee.”
Correction: Use 'tasa' for a specific fee (like for a passport) and 'impuesto' for general government funding (like sales tax).
faena
fah-EH-nahfaˈena

Examples
Terminé todas mis faenas domésticas antes del mediodía.
I finished all my household chores before noon.
Es una faena pesada pero hay que hacerla.
It's a heavy task, but it has to be done.
Los agricultores comienzan su faena muy temprano.
The farmers begin their work very early.
Faena vs. Tarea
While both mean 'task,' 'faena' often implies physical effort or manual labor, whereas 'tarea' is more general and used for schoolwork or digital tasks.
Plurality
Mistake: “Mucho faena”
Correction: Mucha faena (it is a feminine noun, so the word for 'much' must end in 'a').
guardia
gwar-dyaˈɡwar.ðja

Examples
El médico está de guardia esta noche en urgencias.
The doctor is on duty tonight in the emergency room.
Mi próxima guardia es el sábado, así que no puedo ir a la fiesta.
My next shift is Saturday, so I can't go to the party.
Hicieron guardia en la frontera durante seis horas.
They kept watch at the border for six hours.
Using 'De Guardia'
To express that someone is currently working their shift or is available for emergencies, use the structure 'estar de guardia' (to be on duty).
derecho
deh-REH-chohdeˈɾe.t͡ʃo

Examples
Hay que pagar los derechos de aduana para importar el coche.
You have to pay the customs duties to import the car.
La factura incluye los derechos de matrícula de la universidad.
The bill includes the university's registration fees.
tasa
TAH-sahˈtasa

Examples
Debes pagar una tasa para renovar el pasaporte.
You must pay a fee to renew your passport.
Las tasas aeroportuarias están incluidas en el billete.
The airport taxes are included in the ticket.
Tasa vs. Impuesto
A 'tasa' is usually a fee you pay in exchange for a specific service (like getting a license), while an 'impuesto' is a general tax that goes to the government for everything.
responsabilidad
reh-spon-sah-bee-lee-DAHDres.pon.sa.βi.liˈðað

Examples
La responsabilidad de cuidar a mi hermana es muy grande.
The responsibility of taking care of my sister is very great.
Asume la responsabilidad por tus errores.
Take responsibility for your mistakes.
El director evitó toda responsabilidad sobre el proyecto fallido.
The director avoided all accountability for the failed project.
Feminine Noun Rule
Remember that 'responsabilidad' is always a female word, so you must use 'la' before it: 'la responsabilidad'.
Prepositions with Responsibility
When talking about the thing you are responsible for, use the preposition 'de' (of): 'Tengo la responsabilidad de limpiar' (I have the responsibility to clean).
False Cognate Confusion
Mistake: “Decir 'Tengo responsibilidad' (Missing the 'a').”
Correction: The correct spelling is 'responsabilidad' (note the 'a' after the 's'), which is a bit different from the English word.
Obligación vs. Deber
Related Translations
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