This is the 42nd most frequent Dutch word.
ook
"Ook" means "also" or "too."
In this sentence, 'ook' is used to indicate addition or agreement, specifically that the speaker loves both chocolate and vanilla.
Ik hou van chocolade, en ik hou ook van vanille.
I love chocolate, and I also love vanilla.
Here, 'ook' emphasizes the complement following the primary characteristic, highlighting both qualities of the subject.
Hij is niet alleen slim, maar ook erg grappig.
He is not only smart, but also very funny.
In this instance, 'ook' is used to involve or include the addressed person in an action or event.