嶮しい[kewashii] precipitous
嶮岨[kenso] precipice
嶮路[kenro] steep path
天嶮[tenken] natural defences

アルプスの嶮[arupusunoken] steep pass in the Alps
峻嶮[shunken] steep
嶮峻[kenshun] steep
嶮難[kennan] steep

し難い[shinikui] hard to do
一難[ichinan] one difficulty
火難[kanan] fire calamity
海難[kainan] shipwreck
患難[kannan] affliction

危難[kinan] peril
及び難い[oyobigatai] hard to attain to
救難[kyuunan] rescue
救難ヘリコプター[kyuunanherikoputaa] rescue helicopter
苦難[kunan] suffering