• 孤島ことう

  solitary island, isolated island

• 孤児こじ

  orphan

• 孤独こどく

  solitude, loneliness, isolation

• 孤立こりつ

  isolation, being alone, being friendless

• 孤児院こじいん

  orphanage

• 孤こ

  being alone, solitude, loneliness

• 孤影こえい

  lonely figure

• 孤灯ことう

  solitary light

• 孤舟こしゅう

  solitary boat

• 孤客こかく

  lone traveller, lone traveler

• 孤猿こえん

  lone monkey, stray monkey

• 孤帆こはん

  solitary sailboat

• 孤塁こるい

  isolated stronghold

• 孤本こほん

  only extant copy, only existing copy

• 孤城こじょう

  solitary castle, isolated castle

• 孤軍こぐん

  lone (isolated) force, forlorn force

• 孤愁こしゅう

  profound loneliness, deep loneliness

• 孤剣こけん

  sole sword, unarmed but for a sword

• 孤絶こぜつ

  being isolated, being separated, being cut off

• 孤高ここう

  aloof, proudly independent, standing apart, solitary

• 孤雁こがん

  solitary wild goose (i.e. separated from its flock, esp. flying)

• 遺孤いこ

  orphan

• 孤立化こりつか

  isolation

• 孤立語こりつご

  isolating language

• 孤立感こりつかん

  isolation, sense of isolation, feeling of being isolated

• 孤独感こどくかん

  sense of isolation, (feelings of) loneliness

• 孤立牌こりつはい

  isolated tile, lone honor tile, or a suited tile separated by two or more ranks from other complete or incomplete melds

• 孤独死こどくし

  dying alone (esp. of someone who lives alone and dies of natural causes at home without anyone knowing), solitary death

• 孤立死こりつし

  dying alone (esp. of someone who lives alone and dies of natural causes at home without anyone knowing), solitary death

• 孤立概念こりつがいねん

  isolate

• 孤児作品こじさくひん

  orphan works

• 孤立主義こりつしゅぎ

  isolationism

• 孤軍奮闘こぐんふんとう

  fighting alone

• 孤立の姿こりつのすがた

  state of isolation

• 孤立無援こりつむえん

  isolated and helpless, alone and unassisted

• 孤影悄然こえいしょうぜん

  alone and dejected, lonely and downhearted, lonely and crestfallen

• 孤城落日こじょうらくじつ

  feeling (looking) lone and helpless, helplessness of those in reduced circumstances

• 孤城落月こじょうらくげつ

  feeling apprehensive, feeling (looking) lone and helpless, being down-and-out (ruined), helplessness of those in reduced circumstances

• 天涯孤独てんがいこどく

  a person without a single relative

• 戦災孤児せんさいこじ

  war orphan

• 残留孤児ざんりゅうこじ

  displaced orphans, displaced children

• 狷介孤高けんかいここう

  stubborn and aloof

• 鰥寡孤独かんかこどく

  with no one upon whom to depend, utter loneliness, the lonely and the helpless, people who have no kith or kin

• 芽殖孤虫がしょくこちゅう

  Sparganum proliferum (species of worm)

• 陸の孤島りくのことう

  isolated place, out-of-the-way place, remote part of the land

• 孤児著作物こじちょさくぶつ

  orphan works

• 孤立電子対こりつでんしつい

  lone pair (of electrons)

• 百年の孤独ひゃくねんのこどく

  One Hundred Years of Solitude (1967 novel by Gabriel García Márquez)

• 孤立した言語どくりつしたげんご

  language isolate

• 中国残留孤児ちゅうごくざんりゅうこじ

  Japanese orphans left behind in China (after WWII), war-displaced Japanese in China