Sort of map to study on a journey (7)
I believe the answer is:
contour
'sort of map' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'study on a journey' is the wordplay.
'study' becomes 'con' (con can informally mean to study).
'on' is a charade indicator (letters next to each other).
'a journey' becomes 'tour' (tour is a kind of journey).
'con'+'tour'='CONTOUR'
'to' is the link.
Can you help me to learn more?
(Other definitions for contour that I've seen before include "Outline (of land)" , "Defining line" , "Silhouette" , "Map line of equal altitude" , "Feature on map" .)