Doubt in CrPC Sections 218 & 219: Kya Toh Farq Hai?

Yaar samajh nahi aaya, please help. Maine CLAT PG notes ka study kiya hai, lekin CrPC Sections 218 aur 219 ka difference samajh nahi aaya. Section 218 kehte hain ki Police Report karne se pehle, Officer ko Investigation ke dauraan Police Inquest karna hoga. Lekin Section 219 kehte hain ki Court ne bhi Police Report receive kiya ho, toh bhi Court ek aur Investigation kar sakta hai. Kya toh ye dono sections ek hi cheez nahi hain? Ya kya hai iska farq? Please ek example de do, toh main samajh sake. Main to confuse ho gaya hoon.