Hi Mike,
My understanding is that both icons are simply different visual representations of the same positive and negative sentiment markers, rather than indicating different sentiment levels or functionality.
I checked our environment as well and I can see thumbs up/down for positive and negative sentiment on both the waveform and Events panel. I couldn't find the smile/sad-face icons in our UI.
The documentation does seem a little inconsistent here, as the Work with sentiment analysis article describes a green smile for positive sentiment and red sad face for negative sentiment.
It would be interesting to know whether this is due to a UI change or whether the documentation needs updating.
Hope this helps.
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Phaneendra
Technical Solutions Consultant
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