movie genre

[Unregistered]

movie genre

if a comedy is comedies in the plural

then

fantasy (ex harry potter) is fantasies and so on

horror horrors
action actions
suspence suspences

is this right?

[Anglika]

Yes, basically fine.

action collocates and is not used on its own = action movie/action movies. I would leave it as singular in a genre list. The same would apply to SciFi.
suspense - suspenses