A cluster is a group of similar things that are close together, like a cluster of stars, grapes, or houses. It suggests items gathered in a tight bunch.
“Cluster” comes from Old English “clyster,” meaning “bunch” or “cluster,” especially of fruit. It is related to words meaning “to clump” or “to coagulate.”
The idea of a cluster shows up everywhere: in fruit, galaxies, computer servers, and even “cluster headaches.” Once you see it as “things tightly bunched,” you start noticing clusters all over science and everyday life.
Complete word intelligence in one call. Free tier — 50 lookups/day.