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...
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All streams flow to the sea because it is lower than they are. Humility gives it its power.