Libramarian
Adventurer
I would generally fit it under "skill in combat and similar life and death situations," but that reflects my preferring Int-based to Cha-based Warlords. Morale was a separate set of rules in AD&D.
The important thing is that HP do not equal physical resilience.
I don't think anybody actually thinks that though. I have never seen anyone narrate 3 points of damage from a dagger to a 56hp character in the same way that they would narrate the same damage to a 2hp character.
I don't like morale to be mixed in with HP because I prefer to use a separate system for it.