Paste is much thicker than glue. When dry, both are clear, but the paste flakes off really easily. Paste is easier to use for a small child, especially one who doesn't want to get dirty - you can spread it with a popsicle stick and never have to touch it. It satys where you put it and doesn't run like glue. We never use paste, though, because of the flakiness when dry, and it has a smell that I just don't like, lol!