Gender.
Gender is not distinguished except for animated beings, and in them either (1) by added words indicating sex (as sō-pō, “boy,” sō-pī, “girl”; āsō-pinsō, “male child”; āsō-pī, “daughter”; chainòng-ālō, “bull”; chainòng-āpī, “cow”), or (2) by the use of different terms (pō, “father,” pē or pei, “mother,” phū, “grandfather,” phī, “grandmother,” etc.).