| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| English |
| Middle English | cost | coast | n | W7 LRC |
| Middle English | costard | costard | n | AHD LRC |
| Middle English | costrel | costrel | n | W7 LRC |
| English | accost | to address, approach, speak (first) to | vb.trans | AHD W7 LRC |
| English | coast | seashore; border, frontier | n | AHD W7 LRC |
| English | coastal | re: coast | adj | LRC |
| English | costa, costae | rib, riblike part | n | AHD LRC |
| English | costal | re: ribs | adj | AHD W7 LRC |
| English | costard | large English cooking apple | n | AHD W7 LRC |
| English | costrel | leather/wooden/earthenware container for liquids | n | AHD W7 LRC |
| English | cuesta | hill/ridge with steep slope on one side, gentle slope on other | n | AHD W7 LRC |
| English | cutlet | small slice of broiled/fried meat | n | AHD W7 LRC |
| English | intercostal | situated between ribs | adj | AHD W7 LRC |
| English | sternocostal | re: ribs/sternum | adj | AHD W7 LRC |
| West Germanic |
| Dutch | kust | coast | n | TLL LRC |
| German | Kotelett | cutlet, chop (of meat) | n.neut | LRC |
| German | Küste | coast | n.fem | LRC |
| North Germanic |
| Danish | kyst | coast | n | TLL LRC |
| Swedish | kyste | coast | n | TLL LRC |
| Italic |
| Latin | costa, costae | side, costa | n.fem | RPN LRC |
| Medieval Latin | accosto, accostare | to adjoin | vb | AHD LRC |
| New Latin | intercostalis | intercostal | adj | W7 LRC |
| Portuguese | costa | coast | n | TLL LRC |
| Spanish | costa | coast | n | TLL LRC |
| Spanish | cuesta | steep terrain | n.fem | W7 LRC |
| Old French | accoster | to accost | vb | AHD LRC |
| Old French | coste | side, costa | n.fem | W7 LRC |
| Old French | costellette | cutlet | n.fem.dim | W7 LRC |
| Old North French | costard | costard | n | AHD LRC |
| Middle French | accoster | to accost | vb | W7 LRC |
| Middle French | coste | side, costa | n.fem | W7 LRC |
| Middle French | costerel | costrel | n.masc | W7 LRC |
| Middle French | costier | costal; coastal | adj | W7 LRC |
| French | accoster | to accost | vb | AHD LRC |
| French | côte | coast | n | TLL LRC |
| French | côtelette | cutlet, chop (of meat) | n.fem | W7 LRC |
| Italian | costa | coast | n | TLL LRC |
| Balto-Slavic |
| Polish | kość | bone | n | RPN LRC |
| Czech | kost | bone | n | RPN LRC |
| Serbo-Croatian | k̑ost | rib | n | RPN LRC |
| Old Church Slavonic | kostь | bone | n.fem | LRC |
| Bulgarian | kost | bone | n | RPN LRC |
| Macedonian Slavic | koska | bone | n | RPN LRC |
| Russian | kost’ | bone | n | RPN LRC |