Analysis of correct pairings:\n\nP: Garment – A garment is an item of clothing, connected to the concept of a Hinge (e.g., door hinges or garment fastenings).\nQ: Aldrop – An Aldrop is a type of Bolt, commonly employed for securing doors, aligning with (3).\nR: Mortise – A Mortise is a cavity or recess, frequently designed to accommodate a Lock, matching with (1).\nS: Gusset – A Gusset serves as a Plate in construction to reinforce joints, corresponding to (5).\n\nThe definitive pairing is (A): P–4, Q–3, R–1, S–5.