| Kollyrium | collyrium |
| Kolluvium | colluvium |
| Kollegium | collegium |
| Kollodium | collodion |
| Kolloquium | colloquium examination symposium test |
| Pollinium | pollinium |
| Solarium | sunbed tanning bed |
| Kolloid | colloid |
| Kolosseum | Colosseum |
| Kolubrine | culverin |
| kollegial | collegial |
| kollern | gobble |
| Kolabaum | kola kola nut tree |
| Kolibri | hummingbird |
| Kollar | collar |
| Kollation | collating collation |
| Kollegin | colleague |
| Kollektivum | collective noun |
| Kollision | collision |
| Kollusion | collusion |