Thinking about how the names may have come about brought to mind something that happened with an ushiro-waza kata-tori technique: Our instructor, working with my partner and I, explained a movement 'like an airplane', finally getting the light to go on over our heads. I've been to several seminars from his shihan, and I've never heard him call this 'the airplane technique'. And our instructor uses its full Japanese name in teaching. But from that day forward, we know it as 'the airplane technique'.
we do, however, refraining from making airplane noises while doing it. Usually.