And you missed the scientific definition of the word "theory".
Evolution is a fact, because it has been demonstrated in many many ways to have acually occured. But evolution is also a theory, in that it is a description of why species change over time.
Gravity is also a scientific "theory" too. And also a fact. My daughter took "Music theory" classes in college. You want to tell me that music is not a "fact"?
If one takes creationist "it's only a theory" arguments seriously, one might as well try Douglas Adams' method of flight -- throw yourself at the ground and miss. Heck, it might work....