Point of terminology. In the United States, usually, and especially in the media, unqualified "creationism" is synonymous with "young Earth creationism," both of which are synonymous with "intelligent design." (None of this shit deserves to be capitalized, by the way, but not capitalizing is just my issue.)
Not true there is also old earth creationism which makes even less sense than young earth creationism. Theistic evolution is also grouped into creationism. Intelligent design is technically not creationism because it doesn't identify the creator. It could be God, FSM, Aliens or time travelers among many possibilities.