What is it called when you use like and as in comparing two things?

The use of "like" and "as" to compare two things is called simile.

* Simile uses "like" or "as" to directly compare two things.

Here are some examples:

* "The child was as quiet as a mouse." (comparing the child's quietness to a mouse)

* "He looked like a lost puppy." (comparing the man's appearance to a lost puppy)

Note: While "like" and "as" are used for similes, they can also be used for different purposes. For example, "like" can be used to express an example: "I like pizza, like many others."

Let me know if you have any more questions!