Texture, the world wwouldnt be anuything without texture. Everywhere you look or fell its texture. texture can be soft , hard , rough or smooth. those all descride texture.
balance, without balance everything would be on sides and wouldnt look alike.balance is symmetrical, asymetrical, and has equal sides
I learned about Rhythm and if the world didn't have rhythm then the paintings wouldn't flow together and be as butifull as they are.