Understanding fear (12)

I believe the answer is:

apprehension

I believe this is a double definition.

'understanding' is the first definition.
(I know that understanding can be written as apprehension)

'fear' is the second definition.
(I know that apprehension is a type of fear)

(Other definitions for apprehension that I've seen before include "Understanding; anxiety" , "Fear" , "The catching" , "Arrest -- dread" , "Uneasy concern" .)

I've seen this clue in The Telegraph and The Globe and Mail.

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