If someone uses the following saying "it's like a sausage machine- what you put in you are going to get out" in conversation when explaining something, what is that called? What are the 'sayings' called?
Muffet answered your question below this one with the word 'proverbs', which is correct. As you've asked again, I presume you want some other word. I wonder, therefore, whether the word you are looking for is "clich�". That is a sort of saying that has been used so often that it has become boring and rather meaningless.