Why is Japanese fencing called Kendo instead of Daodao?

The word "Kendo" originated from the ancient book "Wu Yue Chun Qiu" in the pre-Qin period of China. As early as the Han Dynasty, there was an exchange of weapons and smelting and casting technology between China and Japan. At the same time, China's two-handed saber technique, which comes down in one continuous line, was introduced to Japan in the Sui and Tang Dynasties through the official exchanges between Japanese envoys in the Sui and Tang Dynasties and Chinese mainland, as well as the non-governmental exchanges between the Korean Peninsula and mainland coastal areas and Japanese islands.

Traditional ancient kendo, known as fencing in Japanese, (fencing) and (けんじゅつ), is a "real" mountain fighting skill used by ancient Japanese warriors in battle.

According to my estimation, maybe the Japanese think the word "sword" is more elegant than a knife. ...