| foot(noun, support, substance, rest, base) |
| gauge(noun, measure, standard) |
| germ(noun, quality, cause, start, character) |
| inspiration(noun, cause, influence, reason, object) |
| meat(noun, quality, character, strength, spirit) |
| nucleus(noun, action, quality, body, cause) |
| starting point(noun, expression, idiom, cause, start) |
| stimulus(noun, cause, reason, object, purpose) |
| theme(noun, study, strength, substance, idea) |
| theory(noun, concept, action, philosophy, rule) |
| thesis(noun, understanding, idea, system, belief) |
| topic(noun, substance, idea, short, meaning) |
| yardstick(noun, gauge) |
| backbone(noun, action, quality, character, spirit) |
| beginning(noun, action, cause, start, top) |
| body(noun, area, strength, effect, quantity) |
| law(noun, regulation, action, rule, measure) |
| mainspring(noun, cause, start, reason, idea) |
| matter(noun, organization, law, drop, area) |
| origination(noun, cause, top, opening, source) |