Relevance (10)
There are a few possibilities for this:
pertinence
'relevance' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aptness that I've seen before include "Appropriate quality" , "Suitability" , "Fitting quality" .)
'relevance' is the definition.
(bearing is a kind of relevance)
This is all the clue.
(Other definitions for bearing that I've seen before include "Manner - pivot - reference" , "Small sphere" , "circular form?" , "Position" , "Posture" .)
'relevance' is the definition.
(I know that pertinence is a type of relevance)
This is the entire clue.
(Other definitions for pertinence that I've seen before include "Relevance" , "fitness" , "Applicability" , "to the point" .)