Root ث ن ي(v n y) has 13 unique word forms and appears 29 times in the Quran.

Word Translation Occurrences
ٱثۡنَيۡنِ (of) the two, two, two (Messengers), (of) the two, two, two (Messengers) 12
ٱثۡنَتَيۡنِ twice, two, two females, twice, two, two females 8
ثَانِيَ the second, Twisting, the second, Twisting 4
ٱثۡنَتَا (of), two, (of), two 4
ٱثۡنَيۡنِۖ two, two 4
ٱثۡنَيۡنِۗ two, two 4
مَثۡنَىٰ (in) pairs, two, (in) pairs, two 4
ٱثۡنَا (is) twelve, (is) twelve 2
مَّثۡنَىٰ two, two 2
يَثۡنُونَ fold up, fold up 2
ٱلۡمَثَانِي the oft-repeated, the oft-repeated 2
مَّثَانِيَ oft-repeated, oft-repeated 2
يَسۡتَثۡنُونَ making exception, making exception 2
ٱثۡنَتَيۡ (into) two, (into) two 2
ٱثۡنَانِ two, two 2
ٱثۡنَيۡ two, two 2