Carob (hieroglyph)
The vertical carob M29 and the vertical date M30 have identical meanings in the Egyptian hieroglyphic language of "sweet", and related words. The carob is a ripe carob pod w/seeds, and its meaning of "sweet" extends to items of taste, smell, and touch.
In Budge's compendium dictionary, there are 15 entries with nedjem, and related words. Six of them are a doubling of the word, nedjemnedjem related to passion, concubines, etc.