Similarities: The idea of all three words is to introduce something new.
Differences: The meaning of "creativity" is to base an object to create a better one. The meaning of "innovation" is to introduce something completely new into the market. The meaning of "invention" isa product considered original, created by marksmanship.
Inter-relationship: When you invent something, you are innovating the product, and sometimes in is based on creativity.
Done by: Jereme