御祖母さん[obaasan] grandmother
お母[ofukuro] one's mother
御母さん[okaasan] mother
お母さま[okaasama] mother
異母[ibo] different mother

雲母[unmo] mica
義母[gibo] mother-in-law
空母[kuubo] aircraft carrier
継母[keibo] stepmother
賢母[kenbo] wise mother

旧趾[kyuushi] ruins
古趾[koshi] historic ruins
趾骨[shikotsu] phalanx (phalange) of the foot
母趾外反症[boshigaihanshou] bunion
趾行性[shikousei] digitigrade (walking on the toes)

外反拇趾[gaihanboshi] hallux valgus
古窯趾[koyoushi] ruins of old kilns
母趾[boshi] big toe
足趾[sokushi] footprints
足趾節[sokushisetsu] pediphalanx