punto crucial angolul

crux [cruces]▼(central or essential point)
noun
[UK: krʌks] [US: ˈkrəks]

watershed [watersheds]▼(critical point marking a change in course or development)
noun
[UK: ˈwɔː.tə.ʃed] [US: ˈwɑː.tər.ˌʃed]