Two questions about keywords and smart bins

For all the clips of a project I have inserted keywords. I wonder how to make a smart bin that lists all the clips that are without keywords, just to check that I haven't forgotten any clips.
Another question: is it possible to get the list of all the keywords I have used (to copy them into a text editor)?
Thank you!
Another question: is it possible to get the list of all the keywords I have used (to copy them into a text editor)?
Thank you!