And how does the Bible describe it? You have the literalists and the figurativelists and even they disagree among themselves.
Yes, there is more than one version of creationism. Which one do you teach? In my Sunday school class, all 10 adults had 10 different ideas about it. While I strongly believe in creationism, one must acknowledge there is more than one version of it. Some believe in the 4000 years things, others believe the process took longer, still others believe something else. ID is an attempt to put some science into creationism, however the basic premise is still the same--that a higher power (i.e. God) created things.
Finally, an honest definition of ID.