The file coco/labels-2014_2017.txt contains human-readable labels for the 80 COCO classes.
The file coco/labels-paper.txt contains human-readable labels for the 91 COCO classes used in original coco paper.
For more details one can follow below article. https://tech.amikelive.com/node-718/what-object-categories-labels-are-in-coco-dataset/
Keras uses this imagenet/class_index.json for its human-readable labels. The labels consist of the first synonym from each synset (with spaces replaced with underscores).
Public domain.