Do you know these words?

• いんぶせんじょう

  parts washing

• おしりを　きれいにしましょう

  I'll wash/wipe your bottom. ; Please wash/wipe your bottom.

• おむつこうかん

  changing diapers

• おむつを　かえる

  to change one's diaper

• しもの　せわ

  taking care of lower body function