Abasement :: Abasement (n.) The act of abasing, humbling, or bringing low; the state of being abased or humbled; humiliation..
Basement :: Basement (a.) The outer wall of the ground story of a building, or of a part of that story, when treated as a distinct substructure. ( See Base, n., 3 (a).) Hence: The rooms of a ground floor, collectively..
Debasement :: Debasement (n.) The act of debasing or the state of being debased.