困難

A group of people or things having similar characteristics; a type, kind, or category. Used for biological species, types of products, or categories of ideas.

A condition that keeps someone or something under control or limits what they can do; a restriction or constraint.

The act of controlling or regulating a system, organization, or group of people to ensure order or compliance.

The degree to which a plan or idea is likely to be successful or can be done; feasibility.

Branching out in many directions; wide-ranging or multifaceted. It is used to describe interests, topics, or problems that are diverse and complex.

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.