필수적

To cite or quote someone else's words, ideas, or work to support an argument or provide information.

To investigate and clearly explain the facts, causes, or circumstances of a matter. It is a staple verb for academic research and investigative journalism.

Understood or implied without being directly stated. It describes something that is suggested but not explicitly expressed.

Being systematic, organized, or methodical according to a certain system or set of rules.

To result from or be caused by a specific fact or event. It is a formal way to express causality.

To be completely opposite or contradictory to each other. Used for opinions, results, or directions.

To regard or consider something or someone as being a certain way. It is used when defining categories or interpreting status in a formal context.

Mutually completing or enhancing each other. It describes a relationship where two different things help improve or support one another.

To study or examine something deeply and systematically. It involves looking at a subject from various angles to understand its essence.

To be limited or confined to a certain scope, area, or range. Often used to point out the narrowness of a study or a phenomenon.