undertaking

noun4

1. •
   That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise.

   • He laid the foundation stone on August 1 1847, and then set around 2,000 workmen loose on the undertaking. The station opened exactly one year later on August 1 1848. — 2021
2. •
   The act of one who undertakes (in either sense).
3. •
   A promise or pledge; a guarantee.

   • Nobody troubles to keep his word, to carry out literally his undertakings. In my small way I try to set that right by showing them the logical development of their ways. — 1923
4. •
   The business of an undertaker, or the management of funerals.