The term "kalkulator" is a noun. It is the Polish word for "calculator," referring to an object, specifically a device used for performing mathematical calculations. Grammatically, it functions as the name of a thing.
As a common, concrete noun, "kalkulator" serves as the subject or object within a sentence structure. For example, it can be the subject performing an action ("The kalkulator solves the equation") or the object receiving an action ("She purchased a kalkulator"). Its classification as a noun dictates that it can be modified by adjectives (e.g., "digital kalkulator," "scientific kalkulator") and can be quantified (e.g., "one kalkulator," "many kalkulators").
Identifying "kalkulator" as a noun is the main point for structuring an article because it establishes the central topic as a tangible entity. This focus guides the content to explore its attributes, functions, history, types, and uses. All descriptive language, related verbs, and supporting concepts will revolve around this core subject, ensuring the article is coherent and centered on explaining the object itself.