Cognitive linguists emphasize that metaphors provide to aid the comprehension of a person conceptual area—usually an abstraction for instance "existence", "theories" or "Suggestions"—by expressions that relate to another, far more common conceptual domain—ordinarily much more concrete, for example "journey", "buildings" or "food items". In his e book In Other Shoes: https://riverfmrwa.illawiki.com/1513468/the_definitive_guide_to_metafora