birthrate vs natality

birthrate and natality both are nouns.

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

As nouns, birthrate and natality are synonyms defined as:

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

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

birthrate (noun)	natality (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