The following words are used interchangeably but they have different meanings:

JOB

It refers to the activity we do every day to get money.

OCCUPATION

It also refers to the activity we do every day to get money but it is more formal than "job".

PROFESSION

It is an occupation requiring training and formal qualification, such as law, medicine, teaching etc.

Accountant contable

Actor / actress actor / actriz

Ambulance driver conductor de ambulancia

Anchorman / Anchorwoman presentador de las noticias en la TV

Archaeologist arqueólogo

Architect arquitecto

Artist artista (músico, escultor, pintor, etc)

Astronaut astronauta

Baker panadero

Bank clerk empleado de banca

Banker banquero

Barber barbero

Barman camarero

Bookseller librero

Bricklayer albañil

Builder albañil, constructor

Businessman / Businesswoman hombre/mujer de negocios

Bus driver conductor de autobús

Butcher carnicero

Carpenter carpintero

Cashier cajero

Chemist (UK) / Pharmacist (US) farmacéutico

Cleaner empleado de la limpieza

Composer compositor

Computer programmer programador informático

Conductor cobrador (autobús / tren)

Consultant asesor

Cook / Chef cocinero

Dancer bailarín, bailarina

Decorator decorador

Dentists dentista

Detective detective

Director director

Doctor médico

Dressmaker modisto

Driver conductor

Dustman basurero (UK)

Economist economista

Electrician electricista

Engineer ingeniero

Estate agent agente inmobiliario

Explorer explorador

Factory worker trabajador de una fábrica

Farmer granjero, agricultor

Fashion designer diseñador de moda

Film star estrella del cine

Firefighter bombero

Fireman / Firewoman bombero, bombera

Fisherman pescador

Fishmonger pescadero

Flight attendant azafato/a de vuelo, auxiliar de vuelo

Florist florista

Gardener jardinero

Graphic designer diseñador gráfico

Greengrocer frutero

Hairdresser peluquero

Hotel manager director de hotel

Inventor inventor

Janitor conserje, bedel, portero

Jeweller joyero

Journalist periodista

Judge juez

Lawyer abogado

Librarian bibliotecario

Lifeguard socorrista, salvavidas

Maid criada, sirvienta

Manager director

Masseuse masajista

Mechanic mecánico

Meteorologist meteorólogo

Miner minero

Model modelo

Mover empleado de una agencia de mudanzas

Musician músico

Nanny niñera

Nurse enfermero

Oculist oculista

Office worker oficinista

Ophthalmologist optalmólogo, oculista

Optician óptico

Paediatrician pediatra

Painter pintor

Pharmacist (US) farmacéutico

Photographer fotógrafo

Physiotherapist fisioterapeuta

Pilot piloto

Plumber fontanero

Police officer (agente de) policía

Policeman / Policewoman (agente de) policía

Politician político

Postman (UK) / Mailman (US) cartero

Priest cura, sacerdote

Psychiatrist psiquiatra

Psychologist psicólogo

Recepcionist recepcionista

Reporter reportero

Sailor marinero, navegante

Salesman / Saleswoman vendedor/ vendedora

Scientist científico

Sculptor escultor

Secretary secretario

Security guard guardia de seguridad

Shepherd pastor

Shoemaker zapatero

Shop assistant dependiente

Singer cantante

Soldier soldado

Sportsman / Sportswoman deportista

Steward / Stewardess auxiliar de vuelo

Student estudiante

Surgeon cirujano

Tailor sastre

Taxi driver taxista

Teacher maestro, profesor

Technician técnico

Tour guide guía turístico

Train driver maquinista (conductor de tren)

Translator traductor

Travel agent agente de viajes

TV presenter presentador de televisión

Veterinarian (Vet) veterinario

Waiter camarero

Waitress camarera

Writer escritor