[こうつう, koutsuu] (n, vs) traffic; transportation; communication; exchange (of ideas, etc.); intercourse; (P) #460
[こうさてん, kousaten] (n) crossing; intersection; (P) #1814
[こうりゅう, kouryuu] (n, vs) (1) (cultural) exchange; interchange; interaction; (inter-) mingling; (social, etc.) networking; intercourse; (2) alternating current; AC; (P) #1837
[こうかん, koukan] (n, vs) exchange; interchange; switching; reciprocity; barter; substitution; replacement; clearing (of checks, cheques); (P) #2286
[こうきょう, koukyou] (n, vs) reverberation #2978
[こうしょう, koushou] (n, vs, adj-no) (1) negotiations; discussions; (2) connection; (P) #3104
[こうたい, koutai] (n, vs) alternation; change; relief; relay; shift; substitution (sports, etc.); (P) #4410
[こうさ, kousa] (n, vs, adj-no) (1) crossing; intersection; (2) (genetic) crossing over; (P) #4782
[こうてん, kouten] (n) point of intersection #5496
[こうばん, kouban] (n, vs) (1) police box; (n, adj-f) (2) alternation; alternating (e.g. current); (P) #6381