Society follows a greater number of its conventions (5)
I believe the answer is:
mores
'conventions' is the definition.
(I've seen this before)
'society follows a greater number of' is the wordplay.
'society' becomes 's' (common abbreviation in names of organisations).
'follows' means one lot of letters go next to another.
'a greater number of' becomes 'more'.
's' after 'more' is 'MORES'.
'its' acts as a link.
This may not be correct. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for mores that I've seen before include "Way of life" , "codes" , "Local customs and conventions" , "Customs, manners" , "Society's customs" .)