Root ن ق ب(n q b) has 3 unique word forms and appears 3 times in the Quran.

English gloss Bore, Pierce, Perforate, Uncover, Mountain Trail, Virtuous, Investigate, Explore, Search, Union, Leader

Word Translation Occurrences
فَنَقَّبُواْ so they explored, so they explored 2
نَقۡبٗا (to do) any penetration, (to do) any penetration 2
نَقِيبٗاۖ leaders, leaders 2