shū shū/ā yí

uncle/aunt

The Chinese words '叔叔' and '阿姨' can both denote 'uncle' or 'aunt'. However, '叔叔' is commonly used for the younger brother of one's father, while '阿姨' refers to the sister of one's father or the wife of one's father's brother. These words can also be used out of respect for an older male or older female figure whether they're family related or not.