Poomsae is not confined within mere motions.

The poomsae is not the motions themselves but the skillful meaning of the motions. It is the skill with flow of your spirit in the series motions. And it is the philosophy in compositon

If you cannot see the skill in poomsae it is not the poomsae of Taekwondo.

If you cannot interprete its implication in poomsae it cannot be poomsae of TAEKWONDO.

Therefore, the poomsaes, which are composed of similar motions, can be different ones.