Liftoff and Shot

Liftoff noun - A rising from a surface at the start of a flight (as of a rocket).

Shot and liftoff are semantically related. in rocket launch topic. In some cases you can use "Shot" instead a noun "Liftoff".

Shot noun - A directed propelling of a missile by a firearm or artillery piece.

Liftoff and shot are semantically related. Sometimes you can replace term "Liftoff" with "Shot", this nouns are similar.