precedency vs precede

precedency is a noun but precede is not a noun.

Word	Noun	Adjective	Verb	Adverb
precedency	Yes	No	No	No
precede	No	No	Yes	No

precedency (noun)	precede (noun)
the act of preceding in time or order or rank (as in a ceremony)
preceding in time
status established in order of importance or urgency

precedency (verb)	precede (verb)
	furnish with a preface or introduction
	move ahead (of others) in time or space
	be the predecessor of
	be earlier in time; go back further
	come before