資本

In a financial context, this term is formal and technical, referring to the money, property, or assets used to generate more wealth. It is the central concept in terms like "capitalism" (資本主義). In these contexts, it carries a heavy, professional tone used in business reports, economics, and legal documents.

In a daily conversational context, it is frequently used in the pattern "〜が資本だ" (Something is the most important asset/foundation). Here, it shifts from a monetary meaning to a metaphorical one, describing a quality or condition that is indispensable for success or survival in a specific role. For example, while a businessman might value financial capital, an athlete would say that physical strength is their "capital."

Avoid confusing this with "資産" (shisan/assets). While "資産" refers to everything one owns of value, "資本" specifically emphasizes the resources used as a base for production or the fundamental strength required to achieve a goal.