Ghost dances in gloomy group (5)
I believe the answer is:
goths
'gloomy group' is the definition.
Although both the answer and 'group' are nouns, they are not in the same form of the noun.
'ghost dances' is the wordplay.
'dances' indicates anagramming the letters.
'ghost' anagrammed gives 'GOTHS'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for goths that I've seen before include "Rome's Germanic invaders" , "A Teutonic people who invaded the Roman Empire" , "Ancient Germans who gave their name to a style of architecture" , "Tribesmen who brought down the Roman empire" , "Germanic invaders of Roman empire" .)