This is the 5369th most frequent Spanish word.
manzanas
Apples.
Here, 'manzanas' refers to the fruit, apples, in its plural form as the direct object of the verb 'comprar' (to buy).
Compré manzanas en el mercado.
I bought apples at the market.
In this sentence, 'manzanas' means 'blocks' or urban squares, indicating a distance measurement in a city.
Caminamos cuatro manzanas para llegar al parque.
We walked four blocks to reach the park.
'Manzanas' once again refers to the fruit, being the subject of the sentence and described further by the predicate.