Blurry x Blurred: Qual a diferença

I'd like to have some help, please

Blurry and blurred,
both are adjectives meaning something difficult to see , unclear in shape (embaçado).
Both are in the dictionary, but man alive! does anybody know the difference between them, then?

Also,
indecision X indeciveness

Indecision, I believe, is more commonly used but they seem to have the same meaning for me.

thanks !