gives more context to node label configuration

content/en/docs/concepts/scheduling-eviction/assign-pod-node.md

@@ -294,13 +294,9 @@ Pod affinity rule uses the "hard"
 `requiredDuringSchedulingIgnoredDuringExecution`, while the anti-affinity rule
 uses the "soft" `preferredDuringSchedulingIgnoredDuringExecution`.
 
-The affinity rule says that the scheduler can only schedule a Pod onto a node if
-the node is in the same zone (`topologyKey: topology.kubernetes.io/zone`) as one or more existing Pods with the label
-`security=S1`.
+The affinity rule specifies that the scheduler is allowed to place the example Pod on a node only if that node belongs to a specific [zone](https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/) where other Pods have been labeled with `security=S1`. For instance, if we have a cluster with a designated zone, let's call it "Zone V," consisting of nodes labeled with `topology.kubernetes.io/zone=V`, the scheduler can assign the Pod to any node within Zone V, as long as there is at least one Pod within Zone V already labeled with `security=S1`. Conversely, if there are no Pods with `security=S1` labels in Zone V, the scheduler will not assign the example Pod to any node in that zone.
 
-The anti-affinity rule says that the scheduler should try to avoid scheduling
-the Pod onto a node that is in the same zone (`topologyKey: topology.kubernetes.io/zone`) as one or more Pods with the label
-`security=S2`.
+The anti-affinity rule specifies that the scheduler should try to avoid scheduling the Pod on a node if that node belongs to a specific [zone](https://kubernetes.io/docs/concepts/scheduling-eviction/topology-spread-constraints/) where other Pods have been labeled with `security=S2`. For instance, if we have a cluster with a designated zone, let's call it "Zone R," consisting of nodes labeled with `topology.kubernetes.io/zone=R`, the scheduler should avoid assigning the Pod to any node within Zone R, as long as there is at least one Pod within Zone R already labeled with `security=S2`. Conversely, the anti-affinity rule does not impact scheduling into Zone R if there are no Pods with `security=S2` labels.
 
 To get yourself more familiar with the examples of Pod affinity and anti-affinity,
 refer to the [design proposal](https://git.k8s.io/design-proposals-archive/scheduling/podaffinity.md).