Words

Arabic
qrˀ - to collect, to put together (Lane 2502)
Arabic
qarˀ-, qurˀ- - menstruation, state of purity from the menstrual discharge (BK 2 702, Lane 2504)
Arabic
qrˁ - être chauve (to be bold) (BK 2 717)
A variant root.
Arabic
qarˁ, qarˁa - Kürbis; Schädel, Kopf (pumkin; skull, head) (AWSG 1018)
Arabic
qurb- - flanks, from the hips to the lower abdomen (BK 2 704)

u < *a accomodated to b ?

Arabic
qrd - to fall off by degrees from the sheep and become compacted in lumps, or clotted (said of wool) (BK 2 709, Lane 2512)
Arabic
qird- - ape; monkey; baboon (Lane 2512)
Arabic
qarad-, qarid- - wool sticking together and compacted in a lump (BK 2 709, Lane 2512)
Arabic
qard- - neck (BK 2 709)
Arabic
qurdūdat- - back (about men, full width of the back from buttocks to shoulders) (BK 2 710)