Root خ م س(x m s) has 5 unique word forms and appears 8 times in the Quran.

English gloss Fifth, Thursday, Pentagon

Word Translation Occurrences
خَمۡسِينَ fifty, (is) fifty, fifty, (is) fifty 4
خَمۡسَةٍ five, five 2
خَمۡسَةٞ (they were) five, (they were) five 2
بِخَمۡسَةِ with five, with five 2
وَٱلۡخَٰمِسَةَ And the fifth, And the fifth 2
وَٱلۡخَٰمِسَةُ And the fifth, And the fifth 2
خُمُسَهُۥ (is) one fifth of it, (is) one fifth of it 2