Root ك و ك ب(k w k b) has 3 unique word forms and appears 5 times in the Quran.

English gloss Star, Group, Troop

Word Translation Occurrences
كَوۡكَبٞ a star 2
كَوۡكَبٗا stars 2
كَوۡكَبٗاۖ a star 2
ٱلۡكَوَاكِبُ the stars 2
ٱلۡكَوَاكِبِ (of) the stars 2