This is the 329th most frequent Persian word.
کند
"کند" in Persian means "slow" or "dull," depending on context.
Here, 'کند' means 'works' as the verb conjugated for the third-person singular subject.
او با سرعت کار میکند.
He works quickly.
Here, 'کند' means 'cools down' as the verb showing what the subject 'this drink' does.
این نوشیدنی خنک میکند.
This drink cools down (things).
Here, 'کند' means 'slow' as an adjective describing the noun 'the air release'.