| Ranking | Keywords | (in)Degree centrality | Keywords | Node betweenness centrality | |
|---|---|---|---|---|---|
| 1 | Regeneration | 0.115385 | Urban | 0.193654 | Degree centrality concentric |
| 2 | Urban | 0.108974 | Waste | 0.116925 | |
| 3 | Waste | 0.096154 | Problem | 0.116714 | |
| 4 | Development | 0.089744 | Regeneration | 0.113214 | |
| 5 | Problem | 0.083333 | Development | 0.068074 | |
| 6 | Pollution | 0.064103 | Foreign country | 0.06728 | |
| 7 | Disposal | 0.051282 | Economy | 0.050083 | |
| 8 | Garbages | 0.051282 | Plan | 0.040827 | |
| 9 | Plan | 0.051282 | Contamination | 0.039418 | |
| 10 | Economy | 0.051282 | Culture | 0.038891 | |
| 11 | Human | 0.044872 | Green space | 0.03787 | |
| 12 | Contamination | 0.044872 | Garbages | 0.037331 | |
| 13 | Production | 0.044872 | Life | 0.034289 | |
| 14 | Industry | 0.044872 | Environmental | 0.032106 | |
| 15 | Green space | 0.044872 | Disposal | 0.031719 | |
| 16 | Environmental | 0.038462 | Human | 0.029927 | Node betweenness centrality concentric |
| 17 | Resources | 0.038462 | Production | 0.0278 | |
| 18 | Population | 0.038462 | Resources | 0.026688 | |
| 19 | Installation | 0.032051 | Agriculture | 0.024891 | |
| 20 | Life | 0.032051 | Pollution | 0.023748 | |
| 21 | Culture | 0.032051 | Local | 0.019997 | |
| 22 | Utilization | 0.025641 | Rural | 0.019707 | |
| 23 | Local | 0.025641 | Need | 0.018458 | |
| 24 | Policy | 0.025641 | Consumption | 0.01833 | |
| 25 | Nationwide | 0.025641 | Plastic | 0.016933 | |
| 26 | Recycling | 0.025641 | Government | 0.016536 | |
| 27 | Use | 0.025641 | Household | 0.015398 | |
| 28 | Foreign country | 0.025641 | Population | 0.014756 | |
| 29 | Collection | 0.025641 | Factory | 0.01468 | |
| 30 | Seoul | 0.025641 | Metropolitan | 0.01332 | |
| Centralization index | 9.94% | 18.505% | |||