This is the 11934th most frequent Portuguese word.
pública
"Public."
Here, 'pública' describes the library, indicating that it is accessible to the general population and funded publicly.
A biblioteca pública oferece muitos recursos para pesquisa.
The public library offers many resources for research.
In this sentence, 'pública' qualifies the school, indicating that it is a non-private institution, generally funded and managed by governmental entities.
Ela trabalha em uma escola pública como professora.
She works at a public school as a teacher.
Here, 'pública' describes a square, conveying that it is a space available for community use and not privately owned.