| Word | Definitions | Synonyms |
|---|---|---|
| natality | (noun) the ratio of live births in an area to the population of that area; expressed per 1000 population per year | Synonyms: birth rate, birthrate, fertility, fertility rate |
| natation | (noun) the act of someone who floats on the water | Synonyms: floating |
| natator | (noun) a person who travels through the water by swimming | Synonyms: bather, swimmer |
| natatorium | (noun) pool that provides a facility for swimming | Synonyms: swimming bath, swimming pool |