Constitution ka Darr ya Door?

Maine suna hai ki IPC (Indian Penal Code) aur BNS (British North America Act, jo ab Canada ka Constitution hai) mein kai laws aur provisions hain jo Constitution ka concept of "due process of law" sunte hue dekhne wali hain. Main confuse hoon ki kya yeh due process ka darja hai. Main two cheezon ki discussion karne wala hoon: a) IPC ka Section 22, jo due process ka vartman hai; aur b) BNS ka Section 9, jo due process ka darja hai. Kya yeh dono ek hi cheez hain? Kya BNS mein due process ka darja aur IPC mein vartman hai? Batao, kya yeh dono cheez ek hi jagah par khane chahiye?