Ring, slide and hook
Imagine you have a big circle that you wear on your finger called a "ring." This ring can move up and down on your finger, but can't fall off because it's too small to go over your knuckle.
Now picture a long rectangular shape that you can put your finger through, called a "slide." When you slide this on your finger, it stays in one place because it's too snug to move around.
Lastly, think of a "hook" like a little hanger that goes on your finger. Similar to a slide, it fits snugly on your finger and stays in place because there's a little bend at the end that keeps it from slipping off.
So basically, rings are round and can move around on your finger, slides are long and stay in one place, and hooks are like little hangers that stay put on your finger.
Now picture a long rectangular shape that you can put your finger through, called a "slide." When you slide this on your finger, it stays in one place because it's too snug to move around.
Lastly, think of a "hook" like a little hanger that goes on your finger. Similar to a slide, it fits snugly on your finger and stays in place because there's a little bend at the end that keeps it from slipping off.
So basically, rings are round and can move around on your finger, slides are long and stay in one place, and hooks are like little hangers that stay put on your finger.