This is the 216th most frequent Spanish word.
pública
Feminine form of "public"; relating to or accessible by the general population.
Here, 'pública' is a conjugation of the verb 'publicar', referring to the act of making thoughts known or sharing them.
Ella pública sus pensamientos en redes sociales frecuentemente.
She frequently publishes her thoughts on social media.
In this case, 'pública' is part of the phrase indicating that the access to the event is open to the public.
El evento es de acceso pública según el anuncio.
The event is publicly accessible according to the announcement.
In this sentence, 'pública' is utilized as an adjective modifying 'biblioteca', indicating that the library is available for general public use and is not private.