Pure
Karrina is a modern phonetic variant of Karina, which itself is a Scandinavian diminutive of Katherine. It ultimately derives from the Greek word 'katharos', meaning pure, and has been used across various cultures in different spellings.
Less common today
Karrina isn't in the latest US Top 1000. It last peaked at #6,528 in 1994.
US births per 5-year period, 1990βpresent (SSA data).