| core(noun, substance, idea, short, meaning) |
| ABCs(noun, adjective, feature, part, plan) |
| basic facts(expression, fundamental, shorts, undercarriage, baggage) |
| basis(noun, body, substance, idea, short) |
| bearing(noun, substance, idea, meaning, essence) |
| bottom line(expression, body, substance, idea, heart) |
| burden(noun, body, substance, idea, short) |
| coal and ice(noun, expression, adjective, idiom, law) |
| force(noun, substance, idea, meaning, essence) |
| gist(noun, body, substance, idea, meaning) |
| heart(body, substance, idea, essence, fundamental) |
| idea(noun, substance, short, meaning, essence) |
| import(noun, body, substance, idea, meaning) |
| kernel(noun, body, substance, idea, short) |
| keynote(noun, substance, idea, short, meaning) |
| main idea(noun, expression, body, substance, heart) |
| marrow(noun, substance, idea, short, meaning) |
| matter(noun, substance, idea, short, meaning) |
| meat(body, substance, idea, heart, essence) |
| meat and potatoes(expression, idiom, heart, center, nucleus) |