Which one should I choose between them?
We walked quietly ____ fear of being discovered.
Here are some examples from Longman Dictionary.Could you please explain the difference between them in terms of meaning and usage because I cannot discern.
Thousands of people are in fear of their lives following the shootings.
Ordinary people lived in fear of being arrested by the secret police.
She finally ran away for fear that he would kill her.
He got to the station early, for fear of missing her