i think i’ve got it!

-A HYPOtonic solution is one that has too few particles and too much water
-A HYPERtonic solution is one that has too many particles and too little water
-Osmosis is water moving from a HYPOtonic solution to a HYPERtonic solution, hoping to become balanced
-Diffusion is particles moving from a HYPERtonic solution to a HYPOtonic solution, hoping to become balanced

right? i knew i could relate them somehow. and by relating them, i would understand them better. i can build logic out changes in the body this way. now i just need to master the kidneys and i think i will be ready for this.