90 (ninety) is the natural number preceded by 89 and followed by 91. In English
speech, the numbers 90 and 19 are often confused, as sounding very similar.
When carefully enunciated, they differ in which syllable is stressed: 19 /
naɪnˈtiːn/ vs 90 /ˈnaɪnti/. However, in dates such as 1999, and when
contrasting numbers ...