This is the 239th most frequent Hungarian word.
ezeket
"These" (accusative form).
In this sentence, 'ezeket' is used as a demonstrative pronoun in the accusative case to specify 'books' as the object of the action.
Ezeket a könyveket már olvastam.
I have already read these books.
Here, 'ezeket' is again a demonstrative pronoun. It identifies 'colors' as the specific set of items the speaker is referring to.
Nem értem ezeket a színeket.
I do not understand these colors.
In this example, 'ezeket' serves to point out 'foods' as the items purchased, emphasizing specificity in a given context.