You'll find yourself using the adjective
A figure of speech in which a word or phrase that ordinarily designates one thing is used to designate another, thus making an implicit comparison, as in "a sea ...
a word or phrase for one thing that is used to refer to another thing in order to show or suggest that they are similar. : an object, activity, or idea that is used as a ...
A figure of speech in which a word or phrase is applied to an object o....
Something that is used in Reference to something that isn't real but more
something of an idea. Used in a