There are lots of earlier posts around homonyms.
Open feature request from 2019
https://forum.inaturalist.org/t/display-major-categories-in-taxon-name-choices-to-better-disambiguate-similar-names/1766
https://forum.inaturalist.org/t/homonym-disambiguation/40664
https://forum.inaturalist.org/t/taxons-with-same-names-show-closest-on-top/51730/6
And @jeanphilippeb has some journal posts around Not-quite-homonyms Use scientific names, they say - none of the confusion you get with common names 
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