Kai (conjunction) has use Greek
Kai (και "and"; Modern Greek: [ce]; Ancient Greek: [kai]; sometimes abbreviated k) is a letter that is a conjunction in Greek, Coptic (ⲕⲁⲓ) and Esperanto (kaj; IPA: [kai̯]).
Kai is the most frequent word in any Greek text and thus used by statisticians to assess authorship of ancient manuscripts based on the number of times it is used.
utilizes employs makes use of is equipped with possesses