This is the 422nd most frequent Portuguese word.
acre
Bitter or sour in taste or smell.
In this context, 'acre' describes a sharp or sour taste, typically used to depict something tart or pungent.
O sabor do limão é bastante acre.
The flavor of the lemon is quite sour.
'Acres' reflects a measurement unit for land area, specifically for real estate or agriculture.
Comprei uma fazenda de 10 acres.
I bought a farm of 10 acres.
Here, 'Acre' is a proper noun, referring to a specific state in Brazil.