| 底 | dǐ qì | lung capacity; lung power / boldness; confidence; self-assurance; vigor | 
| 底 | de | (equivalent to 的 as possessive particle) | 
| 底 | dǐ | bottom; base / background; foundation / copy (of a manuscript or receipt etc) kept as a record / (suffix) end of a year or month / (math.) radix; base (abbr. for 底数) | 
| 气 | qì | gas; air / smell / weather / to make angry; to annoy; to get angry / vital energy; qi |