若干

Hardness refers to the degree or level of how hard a material is, often measured scientifically. It is commonly used to describe the physical properties of minerals, metals, or the mineral content in water (water hardness).

Temperature refers to the physical measurement of how hot or cold an object, liquid, or environment is. It is measured in degrees and is a fundamental concept used in daily life, science, and weather.

Humidity refers to the amount of water vapor present in the air. It is a technical and objective term used to describe weather conditions, indoor environments, or scientific measurements.

Atsuryoku refers to the physical force exerted per unit area, such as atmospheric or water pressure. It is also frequently used metaphorically to describe social, psychological, or political influence and coercion applied to someone.

Tension refers to the pulling force transmitted through an object like a string, cable, or chain when it is pulled tight by forces acting from opposite ends. It is also used metaphorically to describe the emotional or dramatic strain in a story or situation.

Resistance refers to the act of opposing a force, authority, or movement. It can be used to describe physical opposition, electrical opposition, or a psychological feeling of reluctance and discomfort towards an action or idea.

Gravity is the natural force that pulls objects toward the center of the Earth or any other physical body having mass. In Japanese, it is composed of the characters for 'heavy' and 'power', referring to the force that gives weight to physical objects.

The physical force of attraction that pulls objects toward one another, most famously observed as Earth's gravity. It is also used metaphorically to describe a powerful charm or magnetic influence that draws people toward something.

A physical crash or collision between two moving objects like vehicles or particles. It is also commonly used metaphorically to describe a sharp disagreement or conflict between people's opinions, interests, or plans.

A strong physical impact or collision between objects, or a powerful emotional state of being startled or shocked by an event or news. It implies a sudden and forceful effect that leaves a lasting impression or causes visible damage.