This is the 12115th most frequent Polish word.
lądu
"Lądu" is the genitive or dative form of "lądu" in Polish, meaning "land" or "mainland."
Here, 'lądu' indicates the land area compared to the sky, referring to the earth below as viewed from above.
Ptaki szybowały wysoko ponad lądu.
The birds were soaring high above the land.
In this use, 'lądu' refers to the terrestrial region, focusing on the ecosystem and natural landscape.
Uczyliśmy się o faunie i florze lądu.
We studied the fauna and flora of the land.
In this sentence, 'lądu' is used to denote the 'land' as opposed to water or sea, giving a geographical context.