conformance vs. compliance

Does the QA WG consider the terms "conformance" and "compliance" interchangeable?  
For example does the WG (and its tech reports) consider these two assertions 
equivalent:

 1. My implementation is 100% compliant  with specification A
 2. My implementation is 100% conformant with specification A

If these assertions are not equivalent, what's the difference?

Perhaps compliance should be added to:

 http://www.w3.org/QA/glossary

Thanks,

Art Barstow
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