vicissitudes

noun
  1. 1

    Regular change or succession from one thing to another, or one part of a cycle to the next; alternation; mutual succession; interchange.

  2. 2

    (often in the plural) A change, especially in one's life or fortunes.

Source: https://en.wiktionary.org/wiki/vicissitude, https://en.wiktionary.org/wiki/vicissitudes