| 1 | Italian | cassetta | box, case, crate; cassette |
| 2 | Italian | cassa | case, crate, trunk; box; cash register, cash desk |
| 3 | Spanish | caja | box, case; bank; cash desk |
| 4 | Catalan | caixa | box; savings bank |
| 5 | Old Catalan | caixa | box |
| 6 | Old Occitan | caissa | — |
| 7 | Latin | Capsa | Gafsa |
| 8 | Latin | capiō | — |
| 9 | Proto-Italic | kapiō | take |
| 10 | Proto-Italic | kapjō | take, seize |
| 11 | Proto-Indo-European | kh₂pyéti | — |
| 12 | Proto-Indo-European | keh₂p- | to seize, grab; to seize; take up; lift; to take,... |