共
| Level 2 vocabulary | ||
| 共産〜 | (n) communism | |
| 共通 | (adj-na,adj-no,n,vs) commonness/ community/ (P) | |
| 共同 | (n) cooperation/ association/ collaboration/ joint/ (P) | |
| 公共 | (adj-no,n) public/ community/ public service/ society/ communal/ (P) | |
| 共に | (adv,vs) sharing with/ participate in/ both/ alike/ together/ along with/ with/ including/ (P) | |
| Level 1 vocabulary | ||
| 共学 | (n) coeducation/ (P) | |
| 共感 | (n) sympathy/ response/ (P) | |
| 共存 | (n) coexistence/ (P) | |
| 共鳴 | (n) resonance/ sympathy/ (P) | |
| 共和 | (n) republicanism/ cooperation | |
| 共 | (n) (1) both/ all/ and/ as well as/ including/ with/ together with/ (2) neither (with negative verb)/ (P) | |
| 共稼ぎ | (n) working together/ (husband and wife) earning a living together/ (P) | |
| 共働き | (n) dual income/ (P) | |