A greedy algorithm is an algorithm that makes locally optimal choices. The classic example, if you've taken an algorithms course, is the travelling salesman problem with the nearest neighbor heuristic. This starts at an arbitrary node, and will usually generate different solutions based on the node that is chosen to start at.

The very presence of the "internal heuristic" that you mention is usually enough to make the algorithm greedy.

Otherwise, thanks for being nice, and try to take less offense at what people say on the Internet.