@Vinod Survase Thank you for reaching out to us, As I understand you are looking for official document which describes the options mentioned in your query, I have researched alot on your ask, couldnt find official doc explaining these terms, however came across this blog - https://4sysops.com/archives/taking-action-in-microsoft-365-threat-explorer/ which explains the same.
I have reached out to my internally on this to check if we have any official doc explaining the same and will keep you posted once i hear from them.