As tn58 mentioned that there are three types of nonconformances: minor, major, and critical, I would also say that another huge factor that determines the type of nonconformance is when the nonconformance was found. If it was caught prior to the product being released to the field, it will greatly reduce the criticality of the nonconformance and the corrective action of the resulting CAPA should be relatively easy, since all the product is contained. However, if the product was released, the corrective action of the resulting CAPA becomes very difficult, because you have to try to track down the product in the field and it may result in field actions or recalls.