Section 309 CrPC vs. 309 IPC - Kya Hai Ye Dwaara?

Main kuch samajh nahi pa raha, maine section 309 ke baare mein padha hai, jo ke state police ke liye daroga ki nirdharan ki kramik shuruaat hai, lakin maine 309 IPC padha hai, jo ke 'Attempt to Suicide' ke liye nirdharit kar diya gaya hai. Mere dimaag mein ye aata hai ki ye do section hi ek hi chije karte hain. Kya yeh section ek hi hai, ya yeh dono alag-alag hai? Kya mera samajh thik hai? Kya koi saamanya vikalp hai jo mere samajh ko saaf karega?