Subjective Morality?

[DLJ]

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So I'd like an example of a moral fact.  
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So would I.  That would be very helpful to get to grips with the arguments.

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 There's nothing intrinsically wrong with driving on this or that side of the road.  
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Indeed.  It's about principles and policies... consensus and compliance to achieve goals.

And the rule is simple... left is right and right is wrong.  

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Subjectivism contends that moral facts are an expression of states of belief, which are sometimes true, that are constituted by human opinion.  Every true statement about a personally held opinion is the relevant fact to a moral subjectivist - ergo the moral fact, or moral fact of the matter.  There probably are a gazillion of them.  

Realism contends that moral facts are an expression of states of belief, which are sometimes true, that are not constituted by human opinion.   Every true statement that is mind independent is the relevant fact to a moral realist - ergo the moral fact, or moral fact of the matter.  There are decidedly fewer of these than the former..regardless of what they are.
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Thanks for that clarification.  It's useful to see the contrast.

Does this mean that 'Objectivism' and 'Realism' can be used synonymously and if not, what's the difference?

Cheers.