Learn Polish: Ile kosztuje ten szkoleniowiec? - How much does this trainer cost?

The noun szkoleniowiec is formed by attaching the suffix -owiec to the base of szkolenie (training). This suffix is heavily used in Polish to derive agentive nouns — words for people associated with a specific profession, field, or activity. Other common examples include naukowiec (scientist) or związkowiec (trade unionist).

What is the root word that szkoleniowiec comes from?

It traces back to the basic noun szkoła (school). From that, Polish derives the verb szkolić (to train or instruct) and then the verbal noun szkolenie (a training course). Therefore, a szkoleniowiec is literally someone who provides a szkolenie.

How is szkoleniowiec different from the word trener?

Both can translate to "trainer," but their usage differs. The word trener is often used for sports, fitness, or personal coaching. szkoleniowiec, however, is primarily used in professional, corporate, or specialized educational contexts to describe an expert who runs workshops and seminars.

Why is ten szkoleniowiec in the nominative case here? Doesn't the verb kosztować affect its case?