1. angst
I have angst that he will disappear one day.
All my children went through a period of late-adolescent angst.
So they can express everything from admiration and lust to anxiety and angst.
I feel angst when I think of my exams.
Adolescent angst
A lot of finger pointing, a lot of angst and anger.
2. apprehension
I woke before the alarm, filled with apprehension.
She was filled with apprehension when she heard the ambulance.
Comprehension is deeper than apprehension.
If you are anxious and worried about a future event, then that is an example of having apprehension.
the creeps - a feeling of fear and apprehension
He detected in her voice a note of apprehension.
Such employments as warfare, politics, public worship, and public merrymaking, are felt, in the popular apprehension, to differ intrinsically from the labour that has to do with elaborating the material means of life.
His apprehension greatly hinders his progress.