Denshi Jisho — Online Japanese dictionary

糀 こうじ mould grown on rice, etc. as a starter to make sake (mold)
Noun 
楮 こうぞ hybrid mulberry tree used to make Japanese paper (Broussonetia kazinoki x papyrifera)
Noun, Usually written using kana alone 
頭 こうべ head
Noun 
首 こうべ head
Noun 
蒲 こうほ common cattail (Typha latifolia); common bulrush; common reed mace
Noun, Usually written using kana alone 
区域 くいき 1: limits; boundary; domain; zone; sphere; territory;
2: area (e.g. in programming languages)
Common word, Noun 
区画 くかく division; section; compartment; boundary; area; block
Common word, Noun, Suru verb 
区間 くかん 1: section (of track, etc.); segment; dimension;
2: (Mathematical term) interval
Common word, Noun, Noun suffix 
区内 くない in the ward or borough
Common word, Noun 
区分 くぶん division; section; demarcation; partition; segmentation; subdivision; (traffic) lane; compartment; classification; sorting
Common word, Noun, Suru verb, No-adjective 
区別 くべつ distinction; differentiation; classification
Common word, Noun, Suru verb 
区民 くみん ward residents
Common word, Noun 
区立 くりつ established by the ward
Common word, Noun, No-adjective 
厚意 こうい kindness; favor; favour
Common word, Noun 
好意 こうい good will; favor; favour; courtesy
Common word, Noun 
皇位 こうい imperial throne
Common word, Noun 
行為 こうい act; deed; conduct
Common word, Noun 
高位 こうい 1: dignity; eminent; high ranking;
2: high-order (digit, bit, etc.)
Common word, Na-adjective, Noun 
降雨 こうう rainfall; rain
Common word, Noun 
効果 こうか effect; effectiveness; efficacy; result
Common word, Noun, No-adjective 
工科 こうか engineering course
Common word, Noun 
校歌 こうか school song
Common word, Noun 
硬化 こうか hardening; vulcanization; vulcanisation; sclerosis; curing
Common word, Noun, Suru verb, No-adjective 
硬貨 こうか 1: coin;
2: hard currency
Common word, Noun 
降下 こうか fall; descent; (plane) landing; (atmos.) depression
Common word, Noun, Suru verb 
高価 こうか high price
Common word, Na-adjective, Noun 

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