supervene upon vs supersede

supervene upon and supersede both are verbs.

Word	Noun	Adjective	Verb	Adverb
supervene upon	No	No	Yes	No
supersede	No	No	Yes	No

As verbs, supervene upon and supersede are synonyms defined as:

supervene upon and supersede: take the place or move into the position of

Other synonyms of supervene upon include replace, supplant.

supervene upon (verb)	supersede (verb)
take the place or move into the position of	take the place or move into the position of