A nonconformance is generally a physical thing. For instance a part my be out of tolerance or have have damage that makes it nonconforming. A noncompliance is

A nonconformance is generally a physical thing. For instance a part my be out of tolerance or have have damage that makes it nonconforming. A noncompliance is generally referring to procedures. For instance not documenting a step in a quality review or not following the assembly procedures for a door plug and ending up with some extra bolts.