Livelihood; the means or income by which one supports oneself or one's household.
彼は家族の生計を立てるために働いている。
He works to support his family's livelihood.
その収入だけでは生計が立たない。
That income alone is not enough to make a living.
生計を維持するために副業を始めた。
I started a side job to maintain my livelihood.