build upon vs repose on

build upon and repose on both are verbs.

Word	Noun	Adjective	Verb	Adverb
build upon	No	No	Yes	No
repose on	No	No	Yes	No

As verbs, build upon and repose on are synonyms defined as:

Other synonyms of build upon include build on, rest on.

build upon (verb)	repose on (verb)
use as a basis for theories and claims	use as a basis for theories and claims