This is the 5162nd most frequent Spanish word.
gustan
"Like" (used with plural nouns or verbs).
In this sentence, 'gustan' is used with the plural noun 'los libros'. It conveys that the speaker 'likes' plural objects.
Me gustan los libros de aventuras.
I like adventure books.
Here, 'gustan' follows 'te', addressing the other person directly, and refers to the plural noun 'los deportes'.
¿Te gustan los deportes?
Do you like sports?
In this case, 'gustan' is paired with 'les' to refer to the children—'los niños'—who like the plural noun 'los caramelos'.