Sin-Waw-Dal (س-و-د) has 2 words in the Fahm dictionary: aswad (black), siyāda (sovereignty).
In the Quran, words built on this root occur 10 times in 9 verses, across 8 of the 114 suras. The first is in 2:187. The form أَسوَد (black) accounts for 1 of them.
And the angels called to him as he stood praying in the sanctuary: Allah giveth thee glad tidings of (a son whose name is) John, (who cometh) to confirm a word from Allah lordly, chaste, a prophet of the righteous.
On the Day when (some) faces will be whitened and (some) faces will be blackened; and as for those whose faces have been blackened, it will be said unto them: Disbelieved ye after your (profession of) belief? Then taste the punishment for that ye disbelieved.
When if one of them receiveth tidings of the birth of a female, his face remaineth darkened, and he is wroth inwardly.
Quran 16:58
Arabic text: Tanzil Quran Text (Uthmani 1.1), CC BY 3.0, tanzil.net. English: Marmaduke Pickthall, The Meaning of the Glorious Koran (1930), public domain, via Project Gutenberg. Counts and verse choice: Quranic Arabic Corpus morphology data (corpus.quran.com).