Fark between Cognizance and Trial

Bro, main aapse yeh puchta hoon ki Cognizance aur Trial mein kya fark hai. Ye dono concepts CrPC mein hain, lekin yeh achi tarah se samajh mein nahin aate. To main aapse puchta hoon ki aap iske baare mein kuchh detail se jaante hain? Main yeh sochta tha ki Cognizance trial ka ek hissa hai, lekin yeh sach nahin hai. To kya hai Cognizance, aur iska kya connection trial se hai? Koi bhi explanation aap de sakte hain jo maine seekhne mein madad kare.