They are all very concrete elements. The same can be said about our senses of sight and hearing, feelings and pain. Eyes allow us to see. Sight is such a great gift. Sight shows up colours in our life.
Hearing is also a great gift.
Hearing distinguishes sounds and their pitch. Both, sight and hearing, help us to see meaning in our life. Sight and Hearing link us to creative elements in our life. And listening and doing make us creative and help us to bear fruit. The same is also true of feelings and pain.