Here's a breakdown:

* Magma: Molten rock found beneath the Earth's surface.

* Lava: Magma that erupts onto the Earth's surface.

* Igneous Rocks: Rocks formed when magma or lava cools and solidifies.

There are two main types of igneous rocks:

* Intrusive Igneous Rocks: These form when magma cools and crystallizes slowly beneath the Earth's surface. They tend to have large crystals because they have more time to grow. Examples include granite and gabbro.

* Extrusive Igneous Rocks: These form when lava cools and solidifies on the Earth's surface. They typically have smaller crystals because they cool more quickly. Examples include basalt and rhyolite.