This is the 306th most frequent Estonian word.
hinnad
"Prices."
In this sentence, 'hinnad' is used as a plural object to refer to 'prices' being compared or inspected.
Ma kontrollisin poes erinevaid hinnad.
I checked different prices at the store.
Here, 'hinnad' is used to refer to 'prices' within a context of a question, maintaining its plural nominative form.
Kas sa tead, millised hinnad internetis on?
Do you know what the prices are like online?
Here, 'hinnad' is used in its nominative plural form to mean 'prices' as the subject of the sentence.