Examples
拮抗[
kikkou] rivalry
拮据[
kikkyo] diligence
勢力拮抗[
seiryokukikkou] struggle for supremacy between evenly-matched forces (parties)
戦力拮抗[
senryokukikkou] struggle for supremacy between evenly-matched armies (teams)
拮抗筋[
kikkoukin] antagonist (muscle)