Additional Notes
"Patterns"
There exists a variety of names for the pre-arranged series of movements that we practice. Hyung, Tul, Poomsae, Kata, Pattern, Form, and many more, including different spellings of each of them. To avoid confusion, the word "pattern" is used as a style-neutral term, whereas "kata" will be used only when referring to those of Japanese or Okinawan origin.
Names of Patterns
The names of the Chang Hon patterns are largely spelled consistently today, and I try to use the spellings provided in General Choi's encyclopedia.
The original kata, on the other hand, have a variety of names and spellings depending upon which particular style one practices. The original Okinawan names tend to be the most common, but some major styles (Shotokan) use alternate names for most. I will try to include both, but in the interest of readability, I will mostly stick with the Shotokan names as the Chang Hon movements tend to follow Shotokan's variations.
Additionally, the order of first two patterns of the Pinan series are reversed in styles that call them "Heian." So Pinan 1 is Heian 2, and Heian 1 is Pinan 2.
The Nature of Comparison
Watch these videos of two different stylists performing different versions of the same pattern:
Shito Ryu's Pinan Yondan
Shotokan's Heian Yondan
Notice the differences in stances, in rhythm, and even some of the techniques. One uses a front kick where the other uses a side kick. Consider this sequence especially:
These are two different stances and two completely different blocks. Yet, they are still performing the same pattern, and it is still Karate.
In this context, similarities between Karate kata and Chang Hon patterns must be seen in broad terms. Shared sequences may not look exactly the same, but even between different styles of Karate the same pattern can have significant differences.
Additionally, I will tend to describe techniques in general terms (such as "high block" or "knife hand"), though I will otherwise refer to techniques using terminology from the ITF encyclopedia.