This is the 78th most frequent Croatian word.
kako
"Kako" means "how" in English.
In this interrogative sentence, 'kako' is used to ask about someone's state or condition.
Kako si danas?
How are you today?
Here, 'kako' introduces a subordinate clause explaining the manner in which something functions.
Ne znam kako to radi.
I don't know how that works.
In this sentence, 'kako' refers to the manner or approach described or instructed previously.