This is the 800th most frequent Spanish word.
tierra
"Earth," "land," or "soil."
Here, 'tierra' refers to the soil or ground, emphasizing its agricultural and physical properties.
La tierra es rica en minerales importantes.
The soil is rich in important minerals.
In this instance, 'Tierra' signifies the planet Earth in a proper noun context.
La Tierra gira alrededor del sol.
The Earth revolves around the Sun.
Here, 'tierra' is used to describe dry land as opposed to the sea, emphasizing a geographical or metaphorical distinction.