(こうど)

こうど
noun / na-adjective
altitude; advanced
1. altitude, height
The height above sea level or ground level, especially used for aircraft.
高度(こうど)()げる
To gain altitude.
The airplane is flying at an altitude of 10,000 meters.
When climbing mountains, as altitude increases, the air becomes thinner. It takes time for the body to adjust.
2. advanced, high-level
Describing something of an advanced or sophisticated level.
高度(こうど)仕事(しごと)
It's advanced work.
Advanced technology is required.
Solving this problem requires advanced knowledge and experience, and is difficult without an expert.

高度(こうど) has two main uses:

1. As a noun meaning altitude/height (especially for aircraft or mountains)
2. As a na-adjective meaning advanced or high-level

Common collocations:

Note: When used as a na-adjective, it implies sophistication or being high-level.