about the usage of the word "much"

[Aieda]

In "Scientists point out that the acupuncture points have many more nerve endings than other places on the skin", why do we use "many" but not "much" before "more"?

[MrPedantic]

Hello Aieda

Usually, you use "many" with a countable noun, and "much" with a non-countable noun, e.g.

1. There are many more grammarians here than I expected.
— "grammarians" are countable.

2. There is much more food here than I can eat.
— "food" is non-countable.

Have a pleasant Saturday,
MrP