prop up vs shore up

prop up and shore up both are verbs.

Word	Noun	Adjective	Verb	Adverb
prop up	No	No	Yes	No
shore up	No	No	Yes	No

As verbs, prop up and shore up are synonyms defined as:

prop up and shore up: support by placing against something solid or rigid

Other synonyms of prop up include prop, shore.

prop up (verb)	shore up (verb)
support by placing against something solid or rigid	support by placing against something solid or rigid