This is the 746th most frequent Croatian word.
kratko
Short.
"Kratko" is used as an adverb to describe the duration of staying.
Ostani ovdje kratko.
Stay here for a short time.
"Kratko" is used as an adjective to describe the memory.
On ima kratko pamćenje.
He has a short memory.
"Kratko" is used as an adverb to describe the manner of replying.