noun
difference in grades; rank difference
Used in games like go or shogi to describe a difference in skill level or rank between players.
彼とは段差があるから、ハンデをもらった。
Since there is a rank difference between us, I received a handicap.
noun
difference in level; step; bump
Refers to a physical height difference on a surface, such as a step, ramp, or uneven spot on a road or path.
この道は段差が多いので、車で通るときは気をつけてください。
This road has many bumps, so please be careful when driving.
玄関に小さな段差がある。
There is a small step at the entrance.