How to show description for each and every element present in the image?

I want to add a description for each element present in the image. For example, take picture of a plant, if someone hovers on leaves a div should should appear stating “Leaves”, or if someone hovers on roots a div should should appear stating “roots” or if someone hovers on stem of that flower a div should should appear stating “stem” so on and so forth. How can I achieve the same on html? I mean is there any library or api?

Please suggest.
Thank you in advance