She puts decoration into the new age (5)
I believe the answer is:
gemma
'she' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?
'decoration into the new age' is the wordplay.
'decoration' becomes 'mm' (I can't justify this - if you can you should give a lot more credence to this answer).
'into' indicates putting letters inside.
'the new' is an anagram indicator.
'age' is an anagram of 'gea'.
'mm' going within 'gea' is 'GEMMA'.
'puts' is the link.
Can you help me to learn more?
(Other definitions for gemma that I've seen before include "girl" , "Bud" , "Girl's name" .)