共闘 (きょうとう)joint struggle; common (united) front

joint struggle; common (united) frontnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

共闘, its kanji, and other words that share them.Open this graph

Kanji in 共闘

グアテマラ共和国グアテマラきょうわこくRepublic of Guatemala
共同きょうどうdoing together (as equals); sharing
共産党きょうさんとうCommunist Party
公共こうきょうpublic (facilities, service, etc.); communal
共同体きょうどうたいcooperative body; cooperative system
共通きょうつうcommon; shared
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
共和きょうわrepublican; cooperative
戦闘せんとうbattle; fight
闘争とうそうfight; battle
春闘しゅんとうspring labor offensive; annual spring wage bargaining round
健闘けんとうfighting bravely; strenuous efforts
闘志とうしfighting spirit; (will to) fight
闘病とうびょうfighting against an illness
格闘かくとうhand-to-hand fighting; grappling
闘うたたかうto make war (on); to wage war (against)

See how 共闘 connects to the rest of Japanese.