I have to agree with Mr. Morris on this. The Japanese usage is a bit on the simplistic side to be used for any traditionally named kata.
Sounds more like simplified Japanese terminology created by a non-native Japanese speaker.
If your instructor cannot give you valid sources for the history of his particular style, its doubtful that you will find anything about it on your own...
All streams flow to the sea because it is lower than they are. Humility gives it its power.