Visual elements that look like they are links or buttons, but aren’t clickable (i.e. underlined words that aren’t links, elements that have a call-to-action but are not hyperlinked) can easily confuse users.
Do’s and Don’ts of Web Design
Nick Babich

Also known as affordances. This particular iteration of the problem, though, is a modern symptom of flat design. Material does a really good job at keeping it flat but making what users can interact with obvious.

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