Bailment aur Pledge ki Pankhudiyon mein Kitna Faraq?

Maine aaj tak suna hai ki baat hai dono hi transaction, lekin kya sach mein yah ek saath hi ho sakte hain ya nahin. Maine suna hai ki pledge ek kind of hypothecation hai, par kya yeh true hai? Pledge ki definition kya hai, aur yah bhi kai cases mein discuss kiya gaya hai. Lekin yahan ek case hai jo mujhe confuse kar raha hai - "Ramanbhai Patel vs. Sesa Shriram Industries" (2002) 5 SCC 511. Yahan pata chal raha hai ki bai'malik ke pas baithak ki aapsi jaghot main ek bai'malik ki chot hai. Par yeh kya hota hai?