natality vs birthrate

natality and birthrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
natality	Yes	No	No	No
birthrate	Yes	No	No	No

As nouns, natality and birthrate are synonyms defined as:

natality and birthrate: the ratio of live births in an area to the population of that area; expressed per 1000 population per year

Other synonyms of natality include birth rate, fertility, fertility rate.

natality (noun)	birthrate (noun)
the ratio of live births in an area to the population of that area; expressed per 1000 population per year	the ratio of live births in an area to the population of that area; expressed per 1000 population per year