• 共とも

  together with

• 共ども

  first-person plural (or singular)

• 共犯きょうはん

  complicity

• 共済きょうさい

  mutual aid

• 共存きょうぞん

  coexistence

• 共学きょうがく

  coeducation

• 共立きょうりつ

  joint, common

• 共々ともども

  together, in company

• 共栄きょうえい

  mutual prosperity

• 共産きょうさん

  communism

• 共用きょうよう

  common use, communal use, sharing

• 共謀きょうぼう

  conspiracy, collusion, complicity

• 共闘きょうとう

  joint struggle, common (united) front

• 共通きょうつう

  common, shared, mutual

• 共著きょうちょ

  joint authorship, co-authorship, collaboration, joint work

• 共鳴きょうめい

  resonance

• 共催きょうさい

  joint sponsorship (of an event), cosponsorship, joint hosting

• 共和きょうわ

  republicanism

• 共感きょうかん

  sympathy, empathy, response, identification (with someone)

• 共生きょうせい

  coexistence, living together

• 共にともに

  together, jointly

• 共演きょうえん

  appearing together (in a film, play, etc.), performing together (at a concert, etc.), acting together, co-starring, playing together (in a sports match)

• 共同きょうどう

  cooperation, collaboration, association, partnership, (acting in) unison

• 共有きょうゆう

  joint ownership, co-ownership, sharing (e.g. a viewpoint)

• 公共こうきょう

  public (facilities, service, etc.), communal

• 反共はんきょう

  anticommunism

• 共和党きょうわとう

  Republican Party

• 共産党きょうさんとう

  Communist Party

• 共和国きょうわこく

  republic, commonwealth

• 共通点きょうつうてん

  point in common, common feature

• 共和制きょうわせい

  republican form of government, republicanism

• 共稼ぎともかせぎ

  (husband and wife) earning a living together

• 共同体きょうどうたい

  cooperative body, cooperative system, collective, community

• 共働きともばたらき

  (husband and wife) both working, dual income

• 共倒れともだおれ

  falling together, mutual destruction, joint bankruptcy

• 共通語きょうつうご

  common language, lingua franca

• 共産主義きょうさんしゅぎ

  communism

• 公共料金こうきょうりょうきん

  public utilities charge

• 公共放送こうきょうほうそう

  public broadcasting (e.g. NHK, BBC)

• 地方公共団体ちほうこうきょうだんたい

  local public body, local government

• 中華人民共和国ちゅうかじんみんきょうわこく

  People's Republic of China

• グアテマラ共和国グアテマラきょうわこく

  Republic of Guatemala

• 朝鮮民主主義人民共和国ちょうせんみんしゅしゅぎじんみんきょうわこく

  Democratic People's Republic of Korea (North Korea), DPRK

• 共ごと

  including..., with ..., inclusive of, ...and all

• 共栓ともせん

  stopper

• 共働きょうどう

  coaction

• 共形きょうけい

  conformal

• 共格きょうかく

  comitative

• 共起きょうき

  co-occurrence

• 共沸きょうふつ

  azeotrope