Here's the breakdown:
* Nebula: A nebula is a giant cloud of gas (mostly hydrogen and helium) and dust. These clouds exist in interstellar space and can be extremely large.
* Formation of the Solar System: Our solar system formed from a large nebula that collapsed under its own gravity. As it collapsed, the material within the nebula spun faster and faster, forming a disk. The center of this disk became the Sun, while the remaining material formed planets, moons, asteroids, and comets.
So, while the solar system ultimately formed from gas and dust, the term nebula is the more specific and accurate term to describe the initial material.
