| Costa Rica | Costa Rica |
| Ostafrika | East Africa |
| Costa-Ricaner | Costa Rican |
| Osteria | osteria |
| Westafrika | West Africa |
| Osnabrick | Osnabrück |
| Ostasiat | East Asian |
| Ostlerin | Oriental |
| Ostrava | Ostrava |
| Nostalgie | nostalgia |
| Ostasien | East Asia Eastern Asia |
| Osteuropa | Eastern Europe East Europe |
| Südostafrika | South-East Africa |
| köstlich | delicious amuse |
| nostalgisch | nostalgic |
| postalisch | postal by post |
| postfrisch | mint never hinged unmounted |
| Österreich | Austria |
| österlich | paschal Paschal |
| östlich | eastern |