According to the Oxford dictionary the verb "shore up" means, support or hold up something with props or beams. However this acceptation can be expressed with "prop up". So I struggle to grasp the slightest of difference between these verbs.
I know that "shore up" may be used figuratively to say give support to anything that would otherwise fail or decline. So apparently shore up has a larger meaning. I want to know the context where either of these verbs is used.
example: shore up a building vs prop up a building (what is the difference)