Affectionate note from landlord after nothing (4,6)
I believe the answer is:
love letter
'affectionate note' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?
'landlord after nothing' is the wordplay.
'landlord' becomes 'letter' (landlords let property).
'after' says to put letters next to each other.
'nothing' becomes 'love' (love means zero in tennis).
'letter' put after 'love' is 'LOVE-LETTER'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for love letter that I've seen before include "romantic reading material" , "caring note!" , "Billet-doux" .)