悪念[akunen] evil thought
一念[ichinen] determined purpose
一念ほっき[ichinenhokki] being resolved to (do something)
一般概念[ippangainen] general idea
怨念[onnen] grudge

臆念[okunen] something one always remembers
概念[gainen] general idea
観念[kannen] idea
観念主義[kannenshugi] German idealism
基本概念[kihongainen] basic overview