Most commonly swarms will land between 1-20 feet off the ground on a tree branch within 50-100 feet of their hive. At this point they will wait patiently as the scout bees search the area for a new home suitable for the swarm to move into.
Motors A motor is a generic term for an engine. So yes they are the same thing. IMO, you have an electric motor or a gasoline engine.
The difference between machine and mechanism is that machines transform energy to do work, while mechanisms so not necessarily perform this function. The term machinery generally means machines and mechanisms. Figure 2-1 shows a picture of the main part of a diesel engine.