livelihood

Livelihood and the less formal word living, both refer to what one earns to keep (oneself) alive, but are seldom interchangeable within the same phrase: to threaten one’s livelihood; to earn one’s living. “To make a livelihood out of something” suggests making a business of it: to make a livelihood out of knitting hats. “To make a living” suggests making just enough to keep alive, and is particularly frequent in the negative: You cannot make a living out of that.  Maintenance refers usually to what is spent for the living of another: to provide for the maintenance of someone. Maintenance occasionally refers to the allowance itself provided for livelihood: They are entitled to a maintenance from this estate.