Lemma فَحْشَآء has 3 unique word forms and appears 7 times in the Quran.

Word Translation Occurrences
بِٱلۡفَحۡشَآءِۖ immorality, to immorality 4
ٱلۡفَحۡشَآءِ the immorality 4
بِٱلۡفَحۡشَآءِ the immorality 2
وَٱلۡفَحۡشَآءَۚ and the immorality 2
وَٱلۡفَحۡشَآءِ and the shameful 2