This is the 3471st most frequent Polish word.
ziemię
The Polish word "ziemię" means "earth," "soil," or "ground" (accusative form of "ziemia").
Here 'ziemię' refers to 'soil', the upper layer of earth where plants grow.
Lubię patrzeć na świeżą ziemię w ogrodzie.
I like looking at the fresh soil in the garden.
Here 'ziemię' means 'ground', referring to the solid surface of the Earth.
Połóż książkę na ziemię.
Put the book on the ground.
In this sentence, 'ziemię' refers to 'Earth', the planet we live on.