The term "subsidiary" is commonly used in literature to denote that which is secondary or supportive to a primary element. It appears across varied genres to indicate a subordinate role, whether referring to additional narrative threads, as in the development of minor plots or themes that complement a central storyline [1][2], or to lesser charges and auxiliary aspects within technical or analytical discussions [3][4]. In contexts ranging from organizational structure to economic arrangements, the word underscores a dependency or diminished status relative to a dominant component [5][6]. Additionally, in philosophical and critical writings it helps to distinguish between what is essential and what is of lesser relevance, thereby enriching discussions about the hierarchy of ideas and actions [7][8].