strives

noun
  1. 1

    Striving; earnest endeavor; hard work.

  2. 2

    Exertion or contention for superiority, either by physical or intellectual means.

  3. 3

    Bitter conflict, sometimes violent.

  4. 4

    A trouble of any kind.

  5. 5

    That which is contended against; occasion of contest.

Source: https://en.wiktionary.org/wiki/strife, https://en.wiktionary.org/wiki/strive, https://en.wiktionary.org/wiki/strives