س ن نs-n-n
(ن) سَنَّ يَسُنُّ سَنًّاsanna yasunnu sannan: a word of many meanings: (1) to sharpen a knife, to clean the teeth with a tooth-stick (2) to pour water gently, to moisten (3) to adopt a way, to make a practice habitual.
مَسْنُوْنٌmasnūn (passive participle, ism mafʿūl): over which water has been poured, i.e. moist. ﴿مِنْ حَمَاٍ مَّسْنُوْنٍ﴾ (Al-Ḥijr 15:26)
سِنٌّsinn (noun, ism dhāt): tooth. ﴿وَالسِّنَّ بِالسِّنِّ﴾ (Al-Māʾidah 5:45)
سُنَّةٌsunnah pl. سُنَنٌsunan (noun, ism dhāt): way, practice, custom. ﴿سُنَّةَ اللّٰهِ فِي الَّذِيْنَ خَلَوْا مِنْ قَبْلُ﴾ (Al-Aḥzāb 33:62)