| foundation(noun, substance, base, balance, stand) |
| base(noun, substance, stand, basis, grounds) |
| fundament(noun, foundation) |
| groundwork(noun, support, substance, authority, base) |
| foot(noun, support, substance, authority, base) |
| substructure(noun, support, substance, authority, base) |
| basis(noun, substance, base, balance, foundation) |
| bottom(noun, substance, base, balance, foundation) |
| floor(noun, bottom) |
| infrastructure(noun, support, substance, authority, base) |
| seat(noun, base, balance, stability, bottom) |
| bed(noun, support, substance, authority, base) |
| radical |
| basement(noun, balance, foundation, basis, warrant) |
| cornerstone(noun, base, basis, preparation) |
| footing(noun, support, substance, authority, base) |
| root(noun, support, substance, authority, base) |
| underpinning(noun, support, substance, authority, base) |
| alkali |
| ass |