Riddle: My first four letters describe all living things. My last five letters are another word for a knight. My job is to save you, and I'm a fan of water. Who am I?
Riddle: I am a piece of equipment that has hundreds of uses; I can even be used to save a life! I am not a medicine and I am non-electric. I come in all shapes and sizes. It doesn't require much specialist training to be used. What am I?