غ س قgh-s-q
(ض) غَسَقَ يَغْسِقُ غَسَقًاghasaqa yaghsiqu ghasaqan: (of the night) to grow dark; for darkness to spread. (This verb is not used in the Quran.)
غَسَقٌghasaq (also a noun (ism dhāt)): the darkness of night. ﴿اِلٰى غَسَقِ الَّيْلِ﴾ (Al-Isrāʾ 17:78)
غَاسِقٌghāsiq (active participle (ism fāʿil)): that which grows dark; the dark night. ﴿وَمِنْ شَرِّ غَاسِقٍ اِذَا وَقَبَ﴾ (Al-Falaq 113:3)
(س) غَسِقَ يَغْسَقُ غَسَقَانًاghasiqa yaghsaqu ghasaqānan: (of the eye) to fill with tears; (of a wound) to fill with pus and run.
غَسَّاقٌghassāq (intensive form (ṣīghat al-mubālaghah) on the pattern of فَعَّالٌfaʿʿāl): pus that keeps flowing. ﴿اِلَّا حَمِيْمًا وَّغَسَّاقًا﴾ (An-Nabaʾ 78:25)