Cognitive linguists emphasize that metaphors serve to aid the comprehension of one particular conceptual domain—generally an abstraction including "everyday living", "theories" or "Tips"—through expressions that relate to another, far more familiar conceptual domain—ordinarily much more concrete, for instance "journey", "properties" or "foodstuff". A combined metaphor can be a metapho... https://www.youtube.com/watch?v=dRuXZtV7Wsk