A ring is a piece of jewelry that you wear on your finger. Rings can be made out of almost anything, but are usually made from some kind of metal with some kind of stone set into them. The lady in the picture has three rings on her hand. Plain rings are generally worn by a married couple after their wedding.
Rip is another word for tear, where you damage something by pulling it in two different directions at once until it breaks.
A fruit or vegetable is ripe if it is fully grown, and is sweet or otherwise ready to eat.
The red tomato on the left of the picture is ripe, the other two are still ripening. They are under ripe.
Risk is a measure of the chance of something going wrong, and what bad things will happen if it goes wrong. For example, you have a higher risk of having a heart attack as you get older and fatter.
Risk is also exposing yourself to the possibility of something bad happening, for example the man in the picture is risking falling off the ladder by standing too high on it to hang his wares.
