This is the 3295th most frequent Polish word.
tkwi
"Tkwi" means "lies," "dwells," or "is stuck" in the sense of remaining in a place or state.
In this sentence, 'tkwi' is used to mean that the essence or core of something is found or lies within a specific cause or factor.
Sukces tkwi w ciężkiej pracy.
Success lies in hard work.
Here, 'tkwi' describes a physical state where something is fixed, inserted, or lodged in a particular place.
Gwoźdź tkwi w desce.
The nail is embedded in the plank.
In this sentence, 'tkwi' is used metaphorically to indicate that the origin or mainstay of an issue is located in a particular aspect.