Proto-CChadic: *čVm-
Meaning: gather, join' 1 , 'gathering' 2
Mofu-Gudur: -́čǝm- 1 [BMof]
Mafa=Matakam: ńčǝ́mǝ́ 2 [BaMaf] reunion autour de chef
Gude: cǝǝmǝ 1 [Hs] ('gather many things into one place', may originate from *cVm- as well)
Notes: Malgwa cam-no [Lr] 'Versammlung)'