Study Italian about degree of difference in adjournment (11)

'difference in adjournment' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

'study italian about degree' is the wordplay.
'study' becomes 'con' (con can mean to study).
'italian' becomes 'it' (common abbreviation).
'about' is a reversal indicator.
'degree' becomes 'nuance' (I can't explain this - if you can you should believe this answer much more).
'it' backwards is 'ti'.
'con'+'ti'+'nuance'='CONTINUANCE'

'of' is the link.

Can you help me to learn more?