What is ZERO SEARCH RESULT? Basic Difference between ZERO SEARCH RESULT and No Search Result.?

ZERO SEARCH RESULT is the one which is considered that is the best answer and showing on the top of SERP. But NO SEARCH RESULT is your site is not in rank.

"Zero search result" is a keyword but that keyword is actually not used.
Google has stopped showing zero search results, i.e., only the answer, followed by a button to “show all results” for searches related to time, calculations and conversions. The blue search results links are now back.

Google began this global experiment a week ago today and has now concluded that “the condensed view experiment should stop for now.”

Danny Sullivan, Google’s search liaison, wrote on Twitter:

We

zero search result: no content exist about this keyword

There is one difference between the two terms. People use the keyword "No search result" but it is actually not a keyword. Whereas "Zero search result" is a keyword but that keyword is actually not used.

zero search result: no one use this keyword in your content but this keyword exists and no search result means no one uses this keyword and this keyword is not exists

these answer is zero