This is the 923rd most frequent Romanian word.
astea
"Astea" means "these" in English.
In this sentence, 'astea' is a demonstrative pronoun used to refer to specific items (in this case, books) that are near the speaker.
Astea sunt cărțile mele preferate.
These are my favorite books.
Here, 'astea' is used as a demonstrative adjective to specify particular clothes being referred to.
Îţi plac hainele astea?
Do you like these clothes?
In this case, 'astea' is a pronoun referring to items previously mentioned or understood in the context.