The word "私人" is formed by directly combining two conceptual building blocks: the character "私", which carries the core idea of "private", "personal", or "self-interest", with the character "人", meaning "person" or "individual". The formation is a straightforward conceptual fusion where the first element ("私") descriptively qualifies the second ("人"), creating the composite notion of a "private person", an individual considered in a non-public, personal, or exclusive capacity, as opposed to an official or public one.