This is the 25th most frequent Catalan word.
aquesta
"This."
In this sentence, 'aquesta' is used as a demonstrative pronoun referring to a specific item ('house') near the speaker.
Aquesta és la meva casa.
This is my house.
Here, 'aquesta' acts as a demonstrative adjective modifying the noun 'pel·lícula' (movie) by specifying which one.
M'agrada aquesta pel·lícula.
I like this movie.
In this case, 'aquesta' is part of the phrase 'aquesta tarda,' indicating a specific time period near the present.