1 that compares things of the same kind 比较的: a comparative study of systems of government 不同政治制度的比较研究

2 compared with sth else or with what is usual or normal 相对的: He had problems with the written exam but passed the practical exam with comparative ease. 他考笔试成绩不太好，但考实践课则比较顺利过关。

3 (grammar语法) (used about the form of an adjective or adverb) expressing a greater amount, quality, size, etc （指形容词或副词形式）比较级的: ‘Hotter’ and ‘more quickly’ are the comparative forms of ‘hot’ and ‘quickly’. hotter和more quickly分别是hot和quickly的比较级。