Stem سَّاعَةُ has 2 unique word forms and appears 15 times in the Quran.

Word Translation Occurrences
ٱلسَّاعَةُ the Hour, the Hour (is) 24
وَٱلسَّاعَةُ and the Hour 4
ٱلسَّاعَةُۖ the Hour 2