This is the 758th most frequent Spanish word.
finales
The Spanish word "finales" means "ends" or "finals" in English, depending on context.
Here, 'finales' refers to the 'endings' or concluding parts of movies, used as a noun.
Los finales de las películas suelen ser emocionantes.
The endings of movies are usually exciting.
In this case, 'a finales de' is a set phrase meaning 'at the end of,' indicating a time period.
Jugamos un torneo de fútbol a finales del verano.
We played a soccer tournament at the end of the summer.
Here, 'finales' is an adjective describing the last chapters, meaning 'final' or 'concluding' in this context.