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The term you are looking for is "quads". Tris have 3 vertices and n-gons have more than 4. Quads are better in general for modelling in Blender, particularly if you are planning to animate. Quads allow for clean straight lines. This is SUPER important. Loop cuts can easily be introduced, selection is easier, UV unwrapping is easier, beveling can be done....


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It's important to use quads (faces with 4 vertexes) mainly cause smoothing algorithms work better on them (try to add a subdivision modifier to a bad topology and you'll see a lot of problems). Also quads let you animate or modify with no problems your mesh. If you are 3d digital sculpting, you can keep bad topology, but it's better to retopology (look into ...


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