| Termen/ Term | Nr. apariții/ No. occurrences |
| COSTEIU | 16 |
| COSTESTI | 2 |
| COTUSCA | 7 |
| CRACAOANI | 2 |
| CRACAUL NEGRU | 1 |
| CRISTIAN | 1 |
| CRISTINESTI | 2 |
| CUCERDEA | 1 |
| CURATELE | 1 |
| CURTISOARA | 4 |
| CUZAPLAC | 3 |
| CAPRA VIORICA | 1 |
| CARAS | 60 |
| CARAS-SEVERIN | 2 |
| CAZAN RADA | 1 |
| CHERA DIMANCEA | 1 |
| CHILIANU IOANA | 1 |
| CHIRILA IOAN | 2 |
| CHISMED | 1 |
| CIMIA TRANSILVANIEI | 2 |
| CIMPIA MUNTENIEI | 4 |
| CIMPIA ROMANATILOR | 5 |
| CIMPIA SOMESULUI | 34 |
| CIMPIA TRANSILVANIEI | 128 |
| CIMPULUNG | 1 |
| CIMPULUNG-MOLDOVENESC | 4 |
| CIOCARU IOANA | 1 |
| CIOTAU VIORICA | 1 |
| CIUNGULESCU GRIGORE | 1 |
| CJ | 988 |
| CLUJ | 1 |
| CLUJ-NAPOCA | 1 |
| CODERIE IOANA | 1 |
| CODRU | 1 |
| COLIBABA CONSTANTIN | 42 |
| CONSTANTIN STELA | 1 |
| COOPERATIVA | 1 |
| CORLATAN FLOAREA | 2 |
| CORUND | 15 |
| COVASNA - HARGHITA | 67 |
| COVASNA-HARGHITA | 82 |
| COZELIUC VALERIAN | 1 |
| CRANTEA ELENA | 1 |
| CRISUL ALB | 1 |
| CRISUL NEGRU | 68 |
| CRISUL REPEDE | 8 |
| CS | 87 |
| CT | 33 |
| CURT MARINCA | 2 |
| CUSMED | 1 |