numeration vs census

numeration and census both are nouns.

Word	Noun	Adjective	Verb	Adverb
numeration	Yes	No	No	No
census	Yes	No	Yes	No

As nouns, census is a hyponym of numeration; that is, census is a word with a more specific, narrower meaning than numeration:

Other hyponyms of numeration include blood count, nose count, nosecount, countdown, miscount, poll, recount, sperm count.

numeration (noun)	census (noun)
the act of counting; reciting numbers in ascending order	a periodic count of the population
naming numbers

numeration (verb)	census (verb)
	conduct a census