Another aspect takes eons (4)
I believe the answer is:
eras
'eons' is the definition.
The definition and answer can be both related to time as well as being plural nouns.
Perhaps you can see an association between them that I don't see?
'another aspect takes' is the wordplay.
'takes' says the answer is hidden in the clue (I've seen 'taking' mean this (the answer is carried or taken by the clue)).
'ERAS' is hidden within 'another aspect'.
Can you help me to learn more?
(Other definitions for eras that I've seen before include "typeface" , "Epochs" , "Periods of time" , "At least two times" , "Periods, ages" .)