Puppets are models of people or animals that you can control and make them move how you want to. Puppets are worked by putting your hand inside them, or by moving them using pieces of string. You use puppets to make up plays and tell stories.
An interesting kind of puppet is the shadow puppet, where instead of looking at the puppets performing you look at their shadows instead.
Something is pure if it is made up of all the one kind of thing, with nothing different. Something pure has no contaminations or anything added.
The rose in the picture is pure white.
Puss is a short word for pussycat. People often use it as a name for a cat, or to call a cat.
Put means to place something somewhere, or to stay in one place.
For example "stay put" or "put it down".