Root ث ب ر(v b r) has 2 unique word forms and appears 5 times in the Quran.

English gloss Destroy, Perish

Word Translation Occurrences
ثُبُورٗا (for) destruction, (for) destructions, (for) destruction, (for) destructions 8
مَثۡبُورٗا (you are) destroyed, (you are) destroyed 2