Answer:
"Thundering silence" is an example of a hyperbole
An intense feeling of anticipation is a suspense
<span>unplanned, </span><span>unpremeditated, </span><span>accidental, </span><span>chance, </span><span>fortuitous, </span><span>serendipitous, </span><span>coincidental,</span><span>casual, </span><span>random</span>
I honestly suggest asking google