Re. defining "creationism."
There are three, as described by Wikipedia below. In main, the creationism I refer to is the belief that the universe and variety of life originate from specific acts of divine creation, one carried out by the Abrahamic god.
1) Young Earth creationism includes a biblical literalist interpretation of the Genesis creation narrative.
2) Old Earth creationism holds that the physical universe was created by God, but that the creation event described in the Book of Genesis is to be taken figuratively. This group generally believes that the age of the Universe and the age of the Earth are as described by astronomers and geologists, but question scientific explanations for the variety of life
3) Progressive creationism holds that species have changed or evolved in a process continuously guided by God, with various ideas as to how the process operated—though it is generally taken that God directly intervened in the natural order at key moments in Earth history.
Take your pick.
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