The root Greg means group what does the word aggregation mean?

The word "aggregation" means the act or process of collecting or gathering things together into a group or whole. It is derived from the Latin term "aggregatio," which also refers to the action of assembling or joining things into a collective entity. Although it shares the root "greg" with the word "group," the specific meaning of "aggregation" focuses on the action of gathering rather than the collective entity itself.