Nun-Sad-Fa (ن-ص-ف) has 1 word in the Fahm dictionary: niṣf (half).
In the Quran, words built on this root occur 7 times in 7 verses, across 3 of the 114 suras. The first is in 2:237. The form نِصْف (half) accounts for all of them.
“In the Quran” counts every occurrence of that dictionary form, in any of its senses.
In the Quran
نِّصْفَهُۥٓ أَوِ ٱنقُصْ مِنْهُ قَلِيلًا
A half thereof, or abate a little thereof
Quran 73:3
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).