Another commenter made a great point that knowing how and when to use these things is likely more difficult, but having a good grasp of the concepts is importan

Another commenter made a great point that knowing how and when to use these things is likely more difficult, but having a good grasp of the concepts is important. Here is a minute of me stabbing at analogies: Coroutines: A subroutine is a basement which you go down into and come up from via the same door. A coroutine, by contrast, is an adjacent room with several doors and you can leave temporarily even if you're not completely done in there (of course, you must re-enter whichever door you previously left; not a perfect analogy). Concurrency: doing multiple things at once. In a kitchen, concurrent actions work best when the cooks either don't share resources or have clever schemes for ensuring there is always an alternative activity to perform if resources are in use. This can be as simple as getting on a list for the knife, or blender, or what-have-you, and you'll be called when it's open. Caching: I dislike going to the grocery store every time I am hungry so I cache things I will need to make shorter trips on average. How much you cache at once is important to determine. Regular expression matching: This isn't what I'm trying to find, this is a description of what I'm trying to find.