Fashions or modes (6)
I believe the answer is:
styles
This clue is a double definition.
'fashions' is the first definition.
('style' can be a synonym of 'fashion')
'modes' is the second definition.
('style' can be a synonym of 'mode')
(Other definitions for styles that I've seen before include "Distinctive manners" , "'Fashions, modes (6)'" , "Fashions or ways of doing things" , "Fashions and manners" , "Ways of writing, painting etc" .)