how would the meaning of the following passage change if Wiesel used the word "suffering" instead of "anguish"

Anguish means severe pain

suffering means hardship or distress

although both mean to feel a degree of pain Anguish is more associated with severe. So if the word was changed to suffer it would make the pain seem less severe and more bearable.

his humanity shines from every page as he bears witness to the tragedy which befell the jewish race at the hands of the nazis. wiesel was a romanian-born jew whose home town of sighet was occupied by the hungarians for most of the second world war. in may 1944, all the jews in the area were forced into cattle wagons and transported to auschwitz.