nounnounadjective

el profesional

professional

Persona que tiene conocimientos especializados y trabaja en una actividad para obtener dinero, generalmente con preparación o estudios en ese campo.

The word profesional refers to several related concepts in Spanish:

Relating to a profession: It describes something or someone belonging to or connected with a specific career, trade, or line of work.
Skilled or expert: It describes a person who performs a task with a high level of competence, excellence, and dedication.
Paid work: It refers to someone who earns their living from a specific activity, as opposed to an amateur who does it for leisure or as a hobby.
Noun usage: It identifies a person who practices a profession (e.g., a doctor, lawyer, or engineer).

Grammar: It functions as an adjective (invariable in gender in its base form, though it becomes profesionales in the plural) and as a noun.
Word origin: It derives from the Latin professio, which relates to the act of making a public declaration or vow. It is composed of the prefix pro- (in front/publicly) and the verb fateri (to acknowledge or confess).