| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| Celtic |
| Irish | gual | coal | n.masc | W7 LRC |
| English |
| Old English | cōl | coal | n.neut | KEW ASD LRC |
| Middle English | col(e) | coal | n | W7 ASD LRC |
| Middle English | colier | collier | n | W7 LRC |
| English | cholla | spiny shrubby treelike cactus | n | AHD LRC |
| English | coal | ember, charred wood, glowing carbon | n | AHD W7 LRC |
| English | collie | large (breed of) dog (bred) for sheep herding | n | AHD W7 LRC |
| English | collier | one who produces charcoal | n | AHD W7 LRC |
| English | colly | to blacken with soot | vb | AHD W7 LRC |
| Scots English | coill, coyll | coal | n | ASD LRC |
| West Germanic |
| Old Frisian | kole | coal | n | ASD LRC |
| Frisian | koal | coal | n | ASD LRC |
| Dutch | kool | coal | n | TLL LRC |
| Old High German | kol | coal | n.neut | KDW LRC |
| Old High German | kolo | coal | n.masc | ASD LRC |
| Middle High German | kol | coal | n.masc | ASD LRC |
| German | Kohle | coal | n.fem | LRC |
| German | Köhler | collier | n.masc | LRC |
| North Germanic |
| Old Norse | kol | coal | n | W7 LRC |
| Icelandic | kol | coal | n.neut | ASD LRC |
| Danish | kul | coal | n.neut | TLL ASD LRC |
| Swedish | kol | coal | n.neut | TLL ASD LRC |
| Italic |
| Old French | cholle | head, round lump | n | AHD LRC |