Answer: Innovation is something that is already invented but has had some changes made to it to make it better.
Discoveries is finding something that has most likely not been found yet.
Inventions are things that have been scientifically made to make some type of work easier.
Diffusion is the spreading of something more widely.
Explanation:
Examples: Iphones have been innovated over the years to make calling and other tasks on phones easier.
People say Christopher Columbus discovered America, but natives were already here so he couldn't have discovered it.
George Washington Carver is said to have invented over 300 products with peanuts.
If you spray perfume in one part of a room the whole room can smell it because it has diffused into the air.
