(ن) فَرَقَ يَفْرُقُ فَرْقًاfaraqa yafruqu farqan: to separate, to put a division between two things; to decide clearly. ﴿وَاِذْ فَرَقْنَا بِكُمُ الْبَحْرَ﴾ (Al-Baqarah 2:50)
فُرْقَانٌfurqān (on the pattern of فُعْلَانٌfuʿlān, in an intensive sense): that which distinguishes thoroughly between truth and falsehood. ﴿وَاَنْزَلَ الْفُرْقَانَ﴾ (Āl ʿImrān 3:4)
فِرْقٌfirq: a separated part, a piece. ﴿فَكَانَ كُلُّ فِرْقٍ كَالطَّوْدِ الْعَظِيْمِ﴾ (Ash-Shuʿarāʾ 26:63); فَرِيْقٌfarīq (noun (ism dhāt)): a group, a party.
Form II (tafʿīl) فَرَّقَ يُفَرِّقُ تَفْرِيْقًاfarraqa yufarriqu tafrīqan: to cause division, to make a distinction. ﴿لَا نُفَرِّقُ بَيْنَ اَحَدٍ مِّنْ رُّسُلِهِۦ﴾ (Al-Baqarah 2:285)
Form V (tafaʿʿul) تَفَرَّقَ يَتَفَرَّقُ تَفَرُّقًاtafarraqa yatafarraqu tafarruqan: to become separated, to be scattered. ﴿وَلَا تَفَرَّقُوْا﴾ (Āl ʿImrān 3:103)
Form III (mufāʿalah) فَارَقَ يُفَارِقُ مُفَارَقَةً وَفِرَاقًاfāraqa yufāriqu mufāraqatan wa-firāqan: to part from one another, to separate. ﴿اَوْ فَارِقُوْهُنَّ بِمَعْرُوْفٍ﴾ (Aṭ-Ṭalāq 65:2); ﴿هٰذَا فِرَاقُ بَيْنِيْ وَبَيْنِكَ﴾ (Al-Kahf 18:78)