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Number of concepts associated with each SG, ordered by frequency (NB: The total is different from the total number of concepts, i.e., 1,468,958, because concepts having more than one SG are counted several times).
| SG identifier | Number of concepts |
|---|---|
| CHEM | 452,377 |
| LIVB | 335,179 |
| DISO | 252,284 |
| PROC | 113,701 |
| ANAT | 94,818 |
| PHYS | 83,748 |
| DEVI | 46,083 |
| CONC | 35,035 |
| GENE | 29,472 |
| OBJC | 9537 |
| PHEN | 8418 |
| ACTI | 4070 |
| ORGA | 2879 |
| OCCU | 1451 |
| GEOG | 1114 |
