연료

A constituent part or ingredient of a whole substance or mixture. It is commonly used in chemistry, medicine, and food science.

The process of moving or flowing in a circle or a regular cycle. Commonly used in biology (blood), economics (capital), and ecology (resources).

The variety of plant and animal life in the world or in a particular habitat, a high level of which is usually considered to be important and desirable.

To cultivate or culture bacteria, cells, or plants in a controlled environment. Metaphorically, it also refers to developing or nurturing a person's abilities or character.

To combine or join two or more things together to form a single entity or to work together.

A set of events or a period of time that repeats regularly in the same order.

Based on, concerned with, or verifiable by observation or experience rather than theory or pure logic.

A typical example or pattern of something; a distinct set of concepts or thought patterns, including theories, research methods, and standards for what constitutes legitimate contributions to a field.

To contain or hold a certain substance or ingredient as a component. It is commonly used in science, nutrition, and environmental contexts.

To be derived from a source, or to branch out from a main origin (e.g., words, financial products, or problems).