安い[yasui] cheap
安っぽい[yasuppoi] cheap-looking
安らか[yasuraka] peaceful
安らぎ[yasuragi] peace (of mind)
安んじる[yasunjiru] to be contented

安易[ani] easy
安穏[annon] peace
安価[anka] low price
安臥[anga] quiet rest
安楽[anraku] ease

慰み[nagusami] amusement
慰む[nagusamu] to be diverted
慰め[nagusame] comfort
慰める[nagusameru] to comfort
慰安[ian] solace

慰安者[iansha] comforter
慰安婦[ianfu] enslaved prostitute
慰藉料[isharyou] consolation money
慰撫[ibu] pacification
慰問[imon] condolences

宇宙旅行[uchuuryokou] space travel
軍旅[gunryo] army
股旅[matatabi] wandering life of a gambler
修学旅行[shuugakuryokou] excursion
新婚旅行[shinkonryokou] honeymoon

船旅[funatabi] trip by boat
団体旅行[dantairyokou] group travel
長旅[nagatabi] long trip
無銭旅行[musenryokou] hitchhiking

行けない[ikenai] wrong
行る[yaru] to send
オリエント急行[orientokyuukou] Orient express
カ行[kagyou] classification for Japanese verb with the dictionary form ending in "ku"
ガ行[gagyou] classification for Japanese verb with the dictionary form ending in "gu"

サ行[sagyou] classification for Japanese verb with the dictionary form ending in "su"
ザ行[zagyou] classification for Japanese verb with the dictionary form ending in "zu"
スパイ行為[supaikoui] espionage
タ行[tagyou] classification for Japanese verb with the dictionary form ending in "tsu"
ダ行[dagyou] classification for Japanese verb with the dictionary form ending in "dzu"