This introduction to the new theories of metaphor defines that term as clarifying a target domain (less understood) by speaking of it in the terms of a source domain (better understood). One maps the source domain onto the target domain, as when we use the language of journeys to understand love. The term "conceptual metaphors" refers to these general mappings. Metaphors are not single, odd instances of language, but rest on these conceptual mappings. (George Lakoff)