I do not understand kubernetes LimitRange configuration. I created a manifest with following contents:

apiVersion: v1
kind: LimitRange
metadata:
  name: cpu-limit-range
spec:
  limits:
  - default:
      cpu: 4
    defaultRequest:
      cpu: 4
    max:
      cpu: 6

    type: Container

And then I run following commands :

[root@localhost ~]# kubectl  delete  pods default-cpu-demo-19 1^C
[root@localhost ~]# kubectl  get pods  -n=limit
NAME                  READY   STATUS    RESTARTS   AGE
default-cpu-demo-19   0/1     Pending   0          9s
[root@localhost ~]# kubectl  describe pods   -n=limit
......(omitted unnecessary echo here)......
  Type     Reason            Age                 From               Message
  ----     ------            ----                ----               -------
  Warning  FailedScheduling  14s (x8 over 9m2s)  default-scheduler  0/1 nodes are available: 1 Insufficient cpu.

Of course, I know that most amount of limit:cpu of a container can not be more bigger than that of above configuration. Otherwise, kubernets will report insufficient cpu.

And yet most amount of max:cpu of a container can not be bigger than that of above configuration as well.

I can't distinguish between maximum and limit, because a value is bigger than the limit or max is not allowed.

So, I want to know what they represent respectively and relation among them.