| A | B |
| alternative | option; one of two or more possibilities |
| circumstance | an occurrence or fact that has an impact on an event of situation; incident |
| comment | a written or spoken statement of observation or opinion |
| compensate | to make up for; to provide or serve as an equivalent |
| component | a part or element of a whole |
| consent | to give agreement, approval or permission |
| consideration | careful attention or thought |
| constant | unchanging; uniform |
| constrain | compel, force, or pressure |
| contribute | to give to a common fund or collection |