Which of the following terms would one use when discussing anything used within a piece of literature that is presented as fact
(even if its not!) in hopes of achieving a certain effect or outcome?

explanation:

shower, toothbrush, toasters, refrigerators,   and the lights

you use the lights to see and brighten a room. and with out them you cant see. you need a toothbrush to clean your teeth with out it stinky breath. shower to wash ya self and without it you stink. toaster to toast stuff without it nothing is toasted. and the refrigerator to keep stuff cold without it everything goes bad