1. 词性及使用频率 -- progress（更常用） 名词：She has made significant progress in her studies.（她在学业上取得显著进步） 动词：The project is progressing smoothly.（项目进展顺利） -- progression（较正式） 名词 ...(以上内容有节略,please sign in for more)
Progress, 【progression】 are not always clearly distinguished, although they can be more or less sharply differentiated.
Both denote movement forward.
Progress (see also 【progress 】 n under ADVANCE 2 ) usually applies to a movement considered as a whole, stressing such aspects as the distance covered, the change or changes taking place, and the amount of improvement made.
【Progression】 (see also SUCCESSION ) commonly applies to a movement in itself or in its detail, often implying a continuous series of steps, degrees, or stages toward an objective but sometimes implying little more than a moving on more or less continuously.
