Organic results are the “real” results. They’re displayed below the Paid result.
Paid results are the ads that always appear at the top of the results page.
Featured Snippets are small blocks of useful information regarding the search – sort of like the Answer Box, except that Featured Snippets contain source links.
Image results are displayed beside organic results or separately in the Images tab of a results page.
Video results are represented in a carousel format for horizontal scrolling.
Answer Boxes are like Featured Snippets. They appear at the top of the results page and provide a direct response to queries
The Knowledge Graph is a box that contains information regarding the search term – enough information, in many cases, to prevent click-through to another site. On a PC or laptop, it appears on the right side of the results page.
Review results are ratings or excerpts from evaluations.