creature|noun|any living being; an imaginary animal or human, especially one that is very strange or frightening (for example, zombies, aliens, monsters)
organism|noun|a living thing such as an animal, plant, or human
red|adjective|having the color like that of blood
system|noun|a method of organizing or doing something by following rules or a plan; a group of connected things or parts working together for a common purpose or goal
tube|noun|a long, round structure through which liquids or gases can flow; a long, thin container in which they can be kept
