| A | B |
| Concise | Cut short; brief |
| Conclude | To bring to an end |
| Conclusion | The last part of something |
| Concrete | Characterized by or belonging to immediate experience of actual things or events; specific; particular; real, tangible |
| Conditions | Something essential to the appearance or occurrence of something else |
| Conduct | The act, manner or process of carrying on; guide |
| Confirm | To give approval to |
| Consequence | Something produced by a cause or necessarily following from a set of conditions |
| Consider | To think about with care or caution |
| Consist | To stand together, to take a stand; |