(ف) جَمَعَ يَجْمَعُ جَمْعًاjamaʿa yajmaʿu jamʿan: to bring scattered things together, to gather, to collect. ﴿الَّذِيْ جَمَعَ مَالًا وَّعَدَّدَهُۥ﴾ (Al-Humazah 104:2)
جَمْعٌjamʿ (noun, ism dhāt): a gathered thing, a company. ﴿سَيُهْزَمُ الْجَمْعُ وَيُوَلُّوْنَ الدُّبُرَ﴾ (Al-Qamar 54:45)
جَامِعٌjāmiʿ (active participle, ism fāʿil): one who gathers. ﴿رَبَّنَآ اِنَّكَ جَامِعُ النَّاسِ لِيَوْمٍ لَّا رَيْبَ فِيْهِ﴾ (Āl ʿImrān 3:9)
مَجْمُوْعٌmajmūʿ (passive participle, ism mafʿūl): gathered, to be gathered. ﴿ذٰلِكَ يَوْمٌ مَّجْمُوْعٌ لَّهُ النَّاسُ﴾ (Hūd 11:103)
مَجْمَعٌmajmaʿ (noun of time or place, ẓarf): a place of gathering. ﴿حَتّٰٓى اَبْلُغَ مَجْمَعَ الْبَحْرَيْنِ﴾ (Al-Kahf 18:60)
جُمُعَةjumuʿah: the day of assembly, Friday. ﴿اِذَا نُوْدِيَ لِلصَّلٰوةِ مِنْ يَّوْمِ الْجُمُعَةِ﴾ (Al-Jumuʿah 62:9)
جَمِيْعٌjamīʿ (adjective on the pattern of فَعِيْلfaʿīl): all together, every one of them. ﴿اِلَيْهِ مَرْجِعُكُمْ جَمِيْعًا﴾ (Yūnus 10:4)
اَجْمَعُajmaʿu (adjective on the pattern afʿal): all, the whole. ﴿فَسَجَدَ الْمَلٰٓئِكَةُ كُلُّهُمْ اَجْمَعُوْنَ﴾ (Al-Ḥijr 15:30)
Form IV (ifʿāl) اَجْمَعَ يُجْمِعُ اِجْمَاعًاajmaʿa yujmiʿu ijmāʿan: to come together on a matter or course, to agree, to resolve firmly. ﴿فَاَجْمِعُوْٓا اَمْرَكُمْ﴾ (Yūnus 10:71)
Form VIII (iftiʿāl) اِجْتَمَعَ يَجْتَمِعُ اِجْتِمَاعًاijtamaʿa yajtamiʿu ijtimāʿan: for people or things to gather. ﴿لَئِنِ اجْتَمَعَتِ الْاِنْسُ وَالْجِنُّ﴾ (Al-Isrāʾ 17:88)
مُجْتَمِعٌmujtamiʿ (active participle, ism fāʿil): one who gathers together.