Here are some other terms that might be used:

* Crystalline solid: This emphasizes the state of matter.

* Crystalline substance: This is a general term for any material that can form crystals.

* Crystal lattice: This refers to the specific arrangement of atoms or molecules within the crystal.

It's important to note that not all materials form crystals. Some materials, like glass, are amorphous, meaning they lack a regular, repeating structure.