Maybe this will help you understand the difference too.
This is from the OOP Final Rule, page 2, "
Sustained flight over an open-air assembly includes hovering above the heads of persons gathered in an open-air assembly, flying back and forth over an open-air assembly, or circling above the assembly in such a way that the small unmanned aircraft remains above some part the assembly. ‘Sustained flight’ over an open-air assembly of people in a Category 1, 2, or 4 operation does not include a brief, one-time transiting over a portion of the assembled gathering, where the transit is merely incidental to a point-to-point operation unrelated to the assembly"
You can find that here:
https://www.govinfo.gov/content/pkg/FR-2021-01-15/pdf/2020-28947.pdf
Actual language from
§ 107.110 Category 1 operations:
To conduct Category 1 operations—
(a) A remote pilot in command must use a small unmanned aircraft that—
(1) Weighs 0.55 pounds or less on takeoff and throughout the duration of each operation under Category 1, including everything that is on board or otherwise attached to the aircraft; and
(b) Does not contain any exposed rotating parts that would lacerate human skin upon impact with a human being.
(c) No remote pilot in command may operate a small unmanned aircraft in sustained flight over open-air assemblies of human beings unless the operation meets the requirements of either § 89.110 or § 89.115(a) of this chapter.
Again, use this conversation as a learning opportunity. We're all here to help each other, and you don't understand the actual rules. So this is a good chance for you to learn them.