Yes, I have some clicking in my right hand. My thumb and first 2 fingers will do this on occasion. And sometime my big toe on my right foot.(this was the toe the boulder smashed several years ago).
Clicking is the tendons moving I believe. Snapping/clicking.
http://en.wikipedia.org/wiki/Cracking_joints
This is less serious and many people have it.
Grinding/crunching sounds are called crepitus, and indicate arthritis in some people.. this is typically a more serious sign
http://en.wikipedia.org/wiki/Crepitus
I have this in my knees.
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Weezie looking at petunias 8.25.2017
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