A second method to slice the corporate bond universe, especially the financial sector, is by different degrees of subordination. We discuss the characteristics of different types of bank debt in detail. In summary, Tier 1 preferred, Upper Tier 2 and Lower Tier 2 differ from senior bank debt in two major dimensions: with respect to loss absorption and interest deferral features. Both Tier 1 and Upper Tier 2 capital are able to absorb losses. But while missed interest payments are canceled immediately for Tier 1 issues they are repaid at a later date for Upper Tier 2 bonds. On the other hand, Lower Tier 2 debt contains no loss absorption features.