I’m not an expert in middle eastern politics.
My uninformed take is that if the Gaza Strip was to self organize as a state, they will implicitly recognize Israel as a state as they will have to decide on borders.
Being unrecognized allows the Palestinian authority to claim all the former Palestinian land as their own.
In real general terms, communism is about people/state’s ownership of the means of production. Under this system, most private property is nationalized.
Socialism allows for private property and sees the role of the state to redistribute power and wealth among its citizens through some sort of state program.