Difference between creationism and science
What's the difference between creationism and science?
....Science
Science is the most successful method for studying the natural world. Scientists create hypotheses and test them experimentally. The scientific community, relying on skepticsim and technical competence, scrutinizes experimental results. Hypotheses which survive test and criticism eventually become accepted scientific theories. Scientists treat accepted theories not as dogma, but as the best natural explanations. In fact improving or overturning an accepted theory is a route to fame.
Creationism
Creationism begins with a conclusion. It then collects arguments to support the conclusion or to detract from other conclusions. Conclusions are not tested experimentally. The method, known as apologetics, was employed extensively by the Catholic church to support doctrine especially before Vatican II. Rejecting accepted dogma is heresy, which is punished by excommunication. Apologetics do not improve understanding of the natural world. To the extent they discourage experiment and are immune to change, they are antiscientific.
Scientific theory
Theory in the vernacular often means speculation. Theory in science means a well tested model of which evolution is a good example. Darwin spent decades testing his theory in his own mind and with his own observations. When Origins... was published many aspects of evolution were unexplained (as many remain today). Over the years many doubts have been removed. Of most significance however is that new technologies (e.g. molecular evolution) reaffirm Darwin's conclusions and better alternatives have not appeared.
The Bible
Assuming that the Bible is the basis of science is to use it antiscientifically. The bible is no more a science handbook than it is a television repair manual. It ignores the fundamental principles of biology (cells, genes, microbes, etc.), chemistry (atoms, molecules, mass conservation, etc.) and physics (mechanics, light, electricity, etc.). The bible is ambiguous about such fundamentals as shape of the Earth and structure of the Solar System. Ambiguity may be a virtue, but it's not a scientific virtue. Biblical interpretation has led to no major scientific advance. Science requires extrabiblical knowledge.