Päälliosa
Päälliosa is a Finnish term that translates to "upper part" or "main part." It is most commonly used in a technical context to describe the main structural or functional component of an object or system. For instance, in engineering, the päälliosa of a machine would refer to its primary housing or working mechanism, distinct from auxiliary parts like a base or mounting.
In everyday language, päälliosa can also denote the most significant or important section of something. For