姥桜[ubazakura] faded beauty
山姥[yamauba] mountain witch
姥捨て[ubasute] practice of abandoning old women (practise)
姥捨て山[ubasuteyama] mountain where old women were abandoned
姥貝[ubagai] Sakhalin surf clam (Pseudocardium sachalinense)

姥鮫[ubazame] basking shark (Cetorhinus maximus)
姥目樫[ubamegashi] ubame oak (Quercus phillyraeoides)
姥彼岸[ubahigan] double weeping rosebud cherry (Prunus pendula)
姥魚[ubauo] Aspasma minima (species of clingfish)

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

一次記憶[ichijikioku] first memory
憶説[okusetsu] hypothesis
憶念[okunen] something one always remembers
憶病[okubyou] cowardice
仮想記憶[kasoukioku] virtual memory

憶える[oboeru] to memorize
記憶[kioku] memory
記憶装置[kiokusouchi] storage (device)
記憶媒体[kiokubaitai] storage medium
記憶法[kiokuhou] mnemonic