Difference between Stick-in-the-mud and Slowcoach

What is the difference between Stick-in-the-mud and Slowcoach?

Stick-in-the-mud as a noun is a person unwilling to participate in activities; a curmudgeon or party pooper. while Slowcoach as a noun is a person who moves slowly.

We hope you now know whether to use Stick-in-the-mud or Slowcoach in your sentence.