| 底 |
dǐ xia | the location below sth / afterwards |
| 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) |
| 下 |
xià | down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action |