航空券

A rapid or sharp decrease in quantity, numbers, or degree. It is typically used in objective or statistical contexts to describe a sudden drop in things like population, sales, or natural resources.

A noun that refers to the process of becoming different or a transformation in state, appearance, or condition. It is a very common word used to describe everything from changes in the weather and seasons to shifts in social trends or scientific processes.

A change, modification, or alteration made to a plan, schedule, or setting. It is commonly used when something previously decided needs to be updated or adjusted to fit a new situation.

A significant change or conversion in direction, state, or mindset. It is commonly used to describe a shift in policy, a change of mood, or a fundamental turn in a situation.

The process of changing from one state, stage, or system to another. It is often used to describe moving data between devices or the transition between different organizational phases.

The act of replacing one thing with another, or substituting a part of something with a different element. It is most commonly used in technical contexts such as mathematics, chemistry, and computer programming (find and replace).

逆転 (gyakuten) refers to a complete reversal of a situation, position, or order. It is most commonly used to describe a sudden comeback in sports or a shift where the losing side becomes the winner.

To turn something over, flip it, or reverse its state or direction. It is frequently used in digital contexts for images and colors, as well as describing a sudden reversal in a situation or trend.

Circulation or cycle refers to the movement of something in a circle or its return to a starting point to repeat again. It is commonly used when talking about blood flow, air movement, or the recycling of resources.

Koutsuu refers to the system and movement of vehicles and people, encompassing both 'traffic' and 'transportation'. It is commonly used to describe the accessibility of a location or the flow of vehicles on the road.