u/Sothus2

Sorry if this is a dumb question but what is the difference from a creek and a river? I know rivers are very large and stuff but is there a definition? I was looking at this creek that runs past the highway i drive almost everyday and googling i found it had dozens of tributes with the main tribute of the creek running for 70 miles with other tributes going for 30+ which just made me wonder why they label it a creek? Then made me wonder what even is a creek?