| Knob |
| Lump |
| Knot |
| Bump |
| Node |
| Cyst |
| Plant bud |
| Small lump |
| Small knot |
| Small bump |
| Root growth |
| Little lump |
| Little bump |
| Mineral lump |
| Botanical lump |
| Abnormal growth |
| Plant root growth |
| Vocal cord problem |
| Rounded protuberance |
| Wartlike protuberance |
| Tumorous growth sometimes |
| Small knotlike protuberance |