穏健[onken] quiet
頑健[ganken] robust health
強健[kyouken] robust health
健か[shitataka] determined
健やか[sukoyaka] vigorous

健胃剤[kenizai] stomach medicine
健胃錠[kenijou] stomach tablets
健気[kenage] brave
健脚[kenkyaku] good walker
健脚家[kenkyakuka] good walker

健康[kenkou] health
健康児[kenkouji] healthy child
健康者[kenkousha] healthy person
健康証明書[kenkoushoumeisho] health certificate
健康診断[kenkoushindan] physical examination

健康体[kenkoutai] healthy body
健康地[kenkouchi] healthy place
健康的[kenkouteki] hygienic
健康美[kenkoubi] physical beauty
健康不安[kenkoufuan] poor health