kouluttaja

Etymology
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Noun

 * 1) trainer person who trains another
 * 2) instructor one who instructs

Usage notes
A teacher in a learning institution is usually called. A coach of a sports team or an individual is. Typical features of the work of a person called include:
 * works with adults
 * teaches work-oriented skills
 * trainer-trainee relationships are relatively short
 * training is often given in temporary premises
 * a special case are the military instructors, which are often called