The Claim: "Gravitation is acceleration." Please help me understand. I'm struggling with this claim. I have a BA with a physics major (though 26 years ago), but I don't seem to be able win an argument about this claim. It's important to advancing our understanding, and I politely request your help. I believe the claim is actually a foreshortened version of "In GR we understand that all gravitation is actually an acceleration." However, gravitation and acceleration cannot be used interchangeably. I've argued rotational acceleration, radioactive decay, and even his car braking. Based on your answer, I either have some remediation to do and some better communication to deliver. Thank you in advance.