What is the difference between dynamesh and ZRemesher?

Could you please explain the fundamental distinctions between dynamesh and ZRemesher? As someone who is new to 3D modeling, I'm eager to understand how these two tools differ in their application, purpose, and the results they produce. Is one more suited for organic shapes while the other excels at hard-surface modeling? Additionally, are there any performance or workflow advantages that set them apart? Clarifying these points would greatly benefit my understanding and help me make an informed choice in my modeling endeavors.