Node
In plain terms
A worker machine in a cluster that runs workloads.
Going deeper
In Kubernetes, a node is a physical or virtual machine that runs pods, managed by the control plane. Nodes provide the compute for workloads.
Under the hood
Each runs a kubelet and container runtime; the control plane schedules pods onto nodes.
Examples
Kubernetes worker nodes, cluster capacity, pod hosting, autoscaling nodes.
Think of it like...
Like an individual worker on a factory floor carrying out assigned tasks.