Difference between delete and remove method in $resource?

I don’t believe there is any difference. Angular source code:

angular.module('ngResource', ['ng']).
  factory('$resource', ['$http', '$parse', function($http, $parse) {
    var DEFAULT_ACTIONS = {
      'get':    {method:'GET'},
      'save':   {method:'POST'},
      'query':  {method:'GET', isArray:true},
      'remove': {method:'DELETE'},
      'delete': {method:'DELETE'}

From Eric W. (his edit was rejected before I could approve it):
AngularJS by Green & Seshadri warns that the delete method may not work in IE unless bracket notation is used (myResource[delete]()) as delete is a reserved word. So you may want to consider using the remove method instead.