== 機能 ==
ニンギジッタの肩書は、植物や農業と結びついている<ref>Wiggermann, 1998, p369</ref>。また、家畜の飼料とされる草の話もよく出てくる<ref>Wiggermann, 1998, pp369-370</ref>。植物の死は、彼が毎年冥界へ旅立つことと関連していた<ref>Wiggermann, 1998, p370</ref>。
Ningishzida's titles connect him to plants and agriculture. He was frequently mentioned in connection with grass, which he was believed to provide for domestic animals.The death of vegetation was associated with his annual travel to the underworld.{{sfn|Wiggermann|1998|p=370}} The "tree" in his name might be [[Vitis|vine]] according to some Assyriologists, including [[Wilfred G. Lambert]], and an association between him and alcoholic beverages (specifically [[wine]]) is well attested, for example one text mentions him alongside the beer goddess [[Ninkasi]], while one of his titles was "lord of the innkeepers."{{sfn|Wiggermann|1998|p=370}}
Like his father Ninazu, he was also associated with snakes, including the mythical [[mushussu]], [[ushumgal]] and [[bashmu]] and in one case [[Nirah]].{{sfn|Wiggermann|1998|p=370}} He was also an underworld god, and in this role was known as the "chair bearer (or chamberlain) of the underworld."{{sfn|Wiggermann|1998|p=371}} Frans Wiggermann on the basis of these similarities considers him and his father to be members of the group of "[[Tigris|Transtigridian]] snake gods," who according to him shared a connection with the underworld, justice, vegetation and snakes.{{sfn|Wiggermann|1997|pp=47-48}} A further similarity between Ningishzida and his father was his occasional role as a warrior god, associated with victory (and as a result with the goddess [[Irnina]], the personification of it).{{sfn|Wiggermann|1998|p=371}} However, not all of their functions overlapped, as unlike Ninazu, Ningishzida never appears in the role of a divine healer.{{sfn|Wiggermann|1998|p=369}}