| fundamental(noun, adjective, part, important, essential) |
| basic(noun, adjective, law, important, emotion) |
| bottom line(noun, expression, law, emotion, heart) |
| gravamen(noun, heart, basic, fundamental, root) |
| heart(noun, law, part, emotion, mood) |
| marrow(noun, emotion, heart, soul, mood) |
| nitty-gritty(noun, adjective, law, important, emotion) |
| nitty gritty(noun, expression, adjective, law, heart) |
| nub(noun, emotion, heart, soul, mood) |
| polestar(noun, emotion, heart, soul, mood) |
| quick(noun, emotion, heart, soul, mood) |
| rock bottom(noun, expression, law, foundation, basic) |
| starting point(expression, root, mainspring, intermediacy) |
| ABCs(noun, law, foundation, basic, fundamental) |
| WK(adjective, renowned, meritable, noted, highpowered) |
| affection(noun, emotion, mood, temperament, core) |
| axiom(noun, law, foundation, basic, stipulation) |
| bare-bones(fundamental, shorts, undercarriage) |
| bare bones(expression, fundamental, shorts, undercarriage) |
| basic facts(expression, fundamental, shorts, undercarriage) |