Root ي م م(y m m) has 3 unique word forms and appears 11 times in the Quran.

Word Translation Occurrences
ٱلۡيَمِّ the river, the sea, the river, the sea 12
فَتَيَمَّمُواْ then do tayammum, then do tayyammum, then do tayammum, then do tayyammum 4
تَيَمَّمُواْ aim (at), aim (at) 2
ٱلۡيَمُّ the river, the river 2
ٱلۡيَمِّۖ the sea, the sea 2