Isolation
Loneliness, Solitude
noun, な adjective, の adjective
こどく
検疫 (けんえき) Quarantine
隔離 (かくり) Isolation, Quarantine
孤立 (こりつ) Isolation, Alone, Friendless
孤独 (こどく) Isolation, Loneliness, Solitude
遮断 (しゃだん) Isolation, Cut Off, Blockade, Quarantine
The child 子 こ played sudoku どく in Isolation.
He writes code こど and eats cookies く in Isolation.