mindmap root((聚集)) gather the most general term, is usually neutral in connotation or may suggest plucking and culling or harvesting: a crowd ~s whenever there is excitement. collect often implies careful selection or orderly arrangement with a definite end in view: ~ed books on gardening. assemble implies an orderly union or organization of persons or things and a conscious or definite end for their coming or being brought together: the country's leading experts on aeronautics ~d under one roof. congregate implies a spontaneous flocking together into a crowd or huddle, usually of similar types: persons were forbidden to ~ under martial law.