Gain attention about unit's stock of liquor (4,6)
I believe the answer is:
wine cellar
'stock of liquor' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'gain attention about unit's' is the wordplay.
'gain' becomes 'win' (synonyms).
'attention' becomes 'ear' (having someone's ear is having their attention).
'about' indicates putting letters inside.
'unit' becomes 'cell' (cell is a kind of unit).
'ear' going around 'cell' is 'ecellar'.
'win'+'ecellar'='WINE-CELLAR'
Can you help me to learn more?
(Other definitions for wine cellar that I've seen before include "Store for burgundy etc" , "Drink stock" , "Storage space" .)