andyjeffries
Senior Master
Pumsae (품새) has the following hanja: 品勢, and means "quality forms of strength." Pumsae does is not a Korean rendering of kata and is not a synonym for hyeong.
Sorry to say this Daniel but you're slightly incorrect; the old term poomse (품세 had that hanja, the term was renamed in 1987 to be poomsae and this is a completely Korean work with no hanja equivalent.
Here's a link from "mastercole" which shows an except from a Kukkiwon magazine:
http://www.flickr.com/photos/grandmastercole/5837213335/in/pool-1667737@N25