Naarai

Youthful, a military chief in David's army (1 Chronicles 11:37), called also Paarai (2 Samuel 23:35).

Source: Easton's Bible Dictionary
Naarai

(handmaid ), one of the valiant men of David’s armies. (1 Chronicles 11:37) In 1 Chron. he is called the son of Ezbai, but in (2 Samuel 23:35) he appears as "Paarai the Arbite." Kennicott decides that the former is correct. (B.C. about 1015.)

Source: Smith's Bible Dictionary