common 多用于指物，侧重很常见，不稀奇。
ordinary 用于物，指每天发生，十分平淡无奇；用于人，指无特别之处，很一般。
common place强调缺少新意。
general 语气强于common，侧重大多如此，很少有例外情况。
usual 指常见常闻和常做的事或举动，强调惯常性。
popular 指适应大众爱好、需要，为大家所公认或接受。
universal 与general同义，但语气较强，侧重对每个人或事物都适用，根本没有例外。
参考例句
1. The use of gestures is universal. 手势的运用是很普遍的。
2. Yet, they are not as universal as we think. 然而，他们不是一样普遍的象我们认为。
3. As for the enterprise has the universal operation significance. 对于企业来说具有普遍的操作意义。
英英解释
n.
1. (linguistics) a grammatical rule (or other linguistic feature) that is found in all languages
2. (logic) a proposition that asserts something of all members of a class
3. a behavioral convention or pattern characteristic of all members of a particular culture or of all h
4. coupling that connects two rotating shafts allowing freedom of movement in all directions adj.
1. of worldwide scope or applicability
2. applicable to or common to all members of a group or set
3. adapted to various purposes, sizes, forms, operations
