undertaking (EN)
noun

noun “undertaking”

sg. undertaking, pl. undertakings or uncountable
  1. an important or challenging job or activity
    Building a new school in the village was a huge undertaking for the community.
  2. a serious promise or commitment
    She gave an undertaking to complete the project by the end of the month.
  3. the work of organizing and managing funerals, typically done by an undertaker
    John's family has been in the undertaking business for three generations.