Old Earth creationism
Old Earth creationism is a term that covers many different types of creationism.
Some old Earth creationists believe God did each act of creation in a day but there were long breaks between each act of creation.
Other old Earth creationists believe days mentioned in Genesis are symbolic and really mean much longer time.
Other old Earth creationists believe God created life gradually over thousands of millions of years.
Other old Earth creationists believe God created life through theistic evolution. Old Earth creationism typically agrees better with what scientists believe about physics, chemistry, geology and the age of the Earth, than Young Earth creationism.
References
Intelligent design
Creation myths