* Magma and Lava are Igneous Rocks: Magma is molten rock found beneath the Earth's surface, and lava is magma that has erupted onto the Earth's surface. When magma or lava cools and solidifies, it forms igneous rocks.

* Sedimentary Rocks Form from Sediments: Sedimentary rocks are formed from the accumulation and cementation of sediments, which are fragments of pre-existing rocks, minerals, or organic matter. These sediments are transported, deposited, and then compacted and cemented over time.

In summary: Magma and lava are the source materials for igneous rocks, while sedimentary rocks are formed from the breakdown and re-assembly of existing rocks.