half-year; half-year period
Often refers to a half-year term of employment, especially in the Edo period. Can also be used generally for a six-month period.
See also: 一季
half a season
Refers to half of a season (e.g., spring, summer). Less common than the half-year sense.
This drama was canceled after half a season.
In the Edo period, servants often worked on half-year contracts.
This job is renewed every half year.