Make a solid, utterly decorative band (6)
I believe the answer is:
freeze
'make a solid' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'utterly decorative band' is the wordplay.
'utterly' indicates a 'sounds like' (homophone) clue (as uttered).
'decorative band' becomes 'frieze' (I've seen this before).
'frieze' sounds like 'FREEZE'.
Can you help me to learn more?
(Other definitions for freeze that I've seen before include "period of cold weather" , "Stand still!" , "Solidify with cold" , "Change liquid to solid through cooling" , "Suddenly become still" .)