縦は、長手方向の意味も持っているので、例えば、滑走路の縦方向というと、横から見ている人にとっては、それは横方向になる訳です。
When I saw one dead leaf was frozen vertically unlike others, I realized unexpectedly that the concept of the words which refer to a direction which is usually used is vague.
The Japanese word "Tate" has the both meanings of a vertical direction and a longer direction. For example, when I say the "tate" direction of the runway, it means "Yoko" (opposite word of "Tate") to a person who watch it from the side.
