Her political activism throws the apathy of others into sharp 'relief'. [=makes the apathy of others very noticeable]
His character provides a little 'comic relief' in what is otherwise a very serious and dramatic movie.
Just one day of sunshine would be a welcome 'relief' from the rainy weather we've been having lately.
(..) your mother sees you. It's an odd realization that it's the thing you've been missing, the only thing you wanted all along, to be seen. And it doesn't feel like a relief, to finally be seen. It feels mean, like, "It turns out that you knew what I wanted, and you waited until the very last moment (..)2018 TvShow: BoJack Horseman Title: Free Churro Season: 5 Episode 6