Approach path and Flight path

Approach path noun - The final path followed by an aircraft as it is landing.

Flight path and approach path are semantically related. In some cases you can use "Flight path" instead a noun phrase "Approach path".

Flight path noun - The path of a rocket or projectile or aircraft through the air.

Approach path and flight path are semantically related. Sometimes you can replace phrase "Approach path" with "Flight path", this phrases are similar.