de-clicker and de-esser

What is a de-clicker? I can’t find it among effects. Also, I could use a de-esser, which I understand is a plug-in. Is it compatible with Audacity?

It’s an effect that attempts to remove or reduce clicks.

I assume that you are referring to these plug-ins: https://forum.audacityteam.org/t/updated-de-clicker-and-new-de-esser-for-speech/34283/1