This is the 7449th most frequent Russian word.
гуща
Thick sediment or dregs (e.g., in liquids like coffee or soup).
Here, 'гуща' is used to describe the dense residue of coffee grounds left after brewing in a cup.
Кофейная гуща осела на дне чашки.
Coffee grounds settled at the bottom of the cup.
In this context, 'гуща' refers to a dense area of trees or vegetation in a forest.
Он вышел из лесной гущи на просторную поляну.
He walked out of the dense forest onto an open meadow.
Here, 'гуща' metaphorically indicates the central, most active, or intense part of events or actions.