mindmap root((一组)) group implies some unifying relationship and ordinarily a degree of physical closeness: a ~ of people waiting for a bus. cluster basically refers to a group of things growing together: a ~ of grapes; but it is often extended to persons or things that form small groups especially within larger masses: cataloging ~s of stars. bunch is likely to imply a natural or homogeneous association of similar things or persons: a ~ of bananas. parcel is likely to convey an impression of disapproval: the whole story was a ~ of lies. lot applies to persons or things that are associated or that have to be dealt with as a whole: the books were sold in ~s.