Option Class
  
Maybe you didn't have a lot in common with the people you graduated high school with. You hated prom. You avoided pep rallies. You never got invited to parties. That's okay...those kinds of classes can be relatively random.
Option classes work differently. They are more like a "class" in animal taxonomy. Like...phylum: chordata; class: mammalia; order: primate...etc.
In terms of options, a class provides all the puts and calls for a particular asset. So all the puts and calls for NFLX stock represent a class. Puts and calls for AAPL are another class. Puts and calls for a specific type of crude oil define yet another class. And so on.