Similar words
obrero
obrero specifically means a manual or blue-collar worker, like a factory worker; trabajador is more general, any worker or employee.
Similar in other languages
German
Arbeiter
Arbeiter is the German word for the same thing — both mean "worker."
Portuguese
operário
operário is the Portuguese word for the same thing — both mean "worker."
Practice
1 What does trabajador mean?
worker
2 Fill the gap: Es un ___ muy serio.
Full sentence: Es un trabajador muy serio. (He is a very serious worker.)
3 Which fingerprint chart matches trabajador?
trabajador: neutral register, core frequency, general domain, neutral connotation.