the means by which a person obtains the basic necessities and support they need to live, such as food and shelter, or broadly, a person's job or source of income;
e.g. Most of the people in the town earn their livelihood working for the university.
(noun)
(old) the state or quality of being filled with energy or life, the quality of being lively;
e.g. They admired her livelihood and endless enthusiasm.