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Appropriate, suitable, or corresponding to a certain level, status, or ability. It is often used to describe costs or rewards that match the effort or quality.

Something that is absolutely necessary or required. It cannot be omitted or avoided.

Being lawful, fair, or based on a logical or moral reason; legitimate.

Duplication, overlap, or repetition. It refers to situations where the same thing exists in multiple places or happens more than once unnecessarily.

Kachi refers to the worth, merit, or importance of something, whether in a monetary, moral, or practical sense. It is commonly used to describe how useful or precious an object, idea, or action is to a person or society.

A noun referring to a difference, gap, or margin between two or more things. It is frequently used to describe disparities in quantity, quality, time, or ability.

A distinctive feature, characteristic, or trait that makes someone or something stand out from others. It is used to describe physical appearances, personality traits, or qualities of objects.

Nouryoku refers to the mental or physical power, skill, or capacity required to perform a specific task or function. It can describe both innate talent and skills acquired through learning and practice.

Katsuyou refers to the practical or effective application of a resource, skill, or piece of information to achieve a goal. In a linguistic context, it specifically describes the conjugation or inflection of verbs and adjectives to change their grammatical function.

The result or impact produced by an action, treatment, or cause. It is used to describe how well something works or the specific outcome achieved through effort or influence.