| bang(noun, charge, cause, boost, spur) |
| base(cause, reason, source, basis, justification) |
| bedrock(cause, reason, source, basis, justification) |
| beggary |
| beginning(noun, cause, start, reason, base) |
| bent(noun, feeling, drive, passion, desire) |
| boost(noun, charge, cause, spur, stimulus) |
| bottom line(noun, expression, end, idea, matter) |
| brainchild(noun, excitement, influence, idea, spur) |
| brainstorm(noun, excitement, influence, idea, spur) |
| business(point, line, issue, idea, material) |
| calling |
| caprice(noun, feeling, drive, passion, desire) |
| carrot(noun, reason, spur, encouragement, lure) |
| causal |
| causality(cause, source, derivation) |
| center(cause, idea, standard, source, essence) |
| chance(belief, hope, anticipation, absence of motive) |
| chapter |
| charge(noun, cause, boost, spur, stimulus) |