What is the difference between Grade 2 and Grade 5 bolts?

Excuse me, could you please clarify the distinction between Grade 2 and Grade 5 bolts for me? I'm curious to know what sets them apart in terms of their strength, durability, and intended applications. Are there any specific industries or projects that typically favor one grade over the other? Furthermore, could you elaborate on the impact that their differing material properties might have on the overall performance and safety of a structure or system? I appreciate your time and expertise in this matter.