Comments are easy to flag because you don't need to look hard for them. They are pretty much everyoneeverywhere, especially on new questions with answers. You could also use a SEDE query to look for some easy to flag comments, but that is often considered a waste of time by many. If you can do it via a SQL query then you can write a piece of software to do it automatically for you.
Post flags are the second type of flagsflag. These included spam, R/A, NAA, close and custom flags.
Some trivia:Some trivia: