For more on why the command has such a bizarre name see this excellent description between the difference between map and noremap. Really good to know!
To summarise that article, here’s a choice quote:
One downside of the
*mapcommands is the danger of recursing…Vim offers another set of mapping commands that will not take mappings
into account when they perform their actions.
So noremap came about to avoid horrible recursion of mappings like
:nmap dd O<esc>jddk
where the dd in the right-hand side of the map recurses back to the left-hand side definition of the map, and Vim gets stuck in an infinite loop!