What are the words that make up the word "Kang"?

Kangshi, Kangfu, Bukang, Hankang, Kangxi, Ankang, Kangyu, Fukang, Jikang, Kangle, Kangqian, Dukang, Kangju, Kanghui, Kangshi, Kaikang, Wenkang, Kangsheng, Kande, Fushoukangning, Zheng Kangcheng's maid, Constanta, Farewell to Kangqiao, Xiaokang's home, Kangzai's song, physical and mental health, people's health and welfare

1. Pinyin: kāng. ?

2. Word groups with different meanings:

(1) Tranquility: Kangle, Kangping, Kangning. ?

(2) Empty: radish is healthy. ?

(3) Broad: Kangzhuang and Kangqu (main roads extending in all directions). ?

(4) Disease-free: health, recovery, health, health. ?

(5) Abundance: well-off and prosperous years. ?

(6) Surname. ?