For example, consider the connections needed to make and understand the above metaphors: Burqa ⇒ ≡ for concealing a Muslim woman ≈ for protecting a Muslim woman ≈ protecting a woman ≈ for protecting a person Armor ⇐ Make-up ⇒ ≡ typically worn by women ≈ expected to be worn by women ≈ must be worn by women ≈ must be worn by Muslim women Burqa ⇐ In each case we see how metaphor draws out and highlights, in a modified or exaggerated form, an existing aspect of each target concept.
metaphor does not indiscriminately transplant arbitrary aspects of a source concept onto a target, but accommodates a selective graft of the most salient aspects of this source concept onto those aspects of the target that can be highlighted by the comparison (Ortony, 1979).