Posture shows relevance (7)
I believe the answer is:
bearing
This clue is a double definition.
'posture' is the first definition.
(I know that posture can be written as bearing)
'relevance' is the second definition.
(bearing is a kind of relevance)
'shows' is the link.
(Other definitions for bearing that I've seen before include "circular form?" , "Relevance, way of moving" , "north?" , "Demeanour - direction" , "Attitude - pivot - reference" .)