What is the difference between nomads and hunter-gatherers of ancient times?

Question

Nomads were the earliest humans from Africa, while hunter-gatherers developed during the Neolithic era.
Nomads were people who moved in search of food, while hunter-gatherers got food by gathering wild food sources and hunting.
Nomads were the first people to migrate out of Africa to search for food, while hunter-gatherers never left Africa.
Nomads moved when they needed food, while hunter-gatherers rarely had to move from where they settled.

Answer 1

The correct answer is:
Nomads were people who moved in search of food, while hunter-gatherers got food by gathering wild food sources and hunting.