This is the 11th most frequent Slovak word.
ktoré
"Which" or "that" (relative pronoun).
"ktoré" acts as a relative pronoun referring to "domy" and introduces a relative clause.
Domy, ktoré sú staré, potrebujú obnovu.
Houses that are old need renovation.
"ktoré" serves as a relative pronoun standing for "knihy" connecting to a subordinate clause.
Vyber si knihy, ktoré ťa zaujímajú.
Choose books that interest you.
"ktoré" functions as a relative pronoun referring to "témy" to introduce additional information.