| compressed(verb, adjective, hard, tough) |
| concentrated(verb, adjective, strong, hard) |
| compact(adjective, close, hard, tough) |
| dense(adjective, hard, tough, solid) |
| solidified(verb, adjective, hard, tough) |
| close(adjective, hard, tough, solid) |
| firm(adjective, hard, solid, heavy) |
| solid(adjective, hard, tough, heavy) |
| consolidated(verb, adjective, solid, heavy) |
| impenetrable(adjective, hard, tough, solid) |
| hard(adjective, tough, firm, solid) |
| heavy(adjective, hard, tough, solid) |
| thickened(noun, verb, adjective, strong) |
| clotted(noun, verb, adjective, solid) |
| coagulated(noun, verb, adjective, solid) |
| concrete(adjective, hard, tough, solid) |
| crowded(adjective, solid, heavy, deep) |
| stiff(adjective, hard, tough, solid) |
| curdled(verb, adjective, solid, heavy) |
| deep(adjective, solid, heavy, stiff) |