People sometimes uses words in a harmful way, which is why words often divide people. And the reason why some words create a more powerful division than others is <em>the way </em>theyre being used and the impact they make while discussing.
Answer:
It's pretty simple lol, a grudge is like never forgiving someone who did something hurtful or you didn't like and usually it last for as long as you want it
Fever go away because it is advertised as being used by 9/10 doctors.