| Subject | English | Thesaurus |
| USA | Army World Class Athlete Program | WCAP |
| abbr., commun. | Class of Services | CoS |
| Nasdaq, abbr. | G & K Services, Inc. Class A | GKSRA |
| ed., abbr. | Junior Scientific Master Class | JSMC |
| Nasdaq, abbr. | Kelly Services, Inc. Class A | KELYA |
| Nasdaq, abbr. | Kelly Services, Inc. Class B | KELYB |
| abbr., scottish | Tribal Class Upgrade & Modernisation Program | TRUMP (Canada) |
| tradem., abbr. | World Class Charter Services | WCCS |
