So the connotations are different, even though the denotations are similar.

因，尽管外延相似，但内涵不同。

This is distinct from denotation, which is more like the dictionary definition of a word.

这与外延不同，外延更像是单词的字典定义。

This is where teachers of English might helpfully note the difference between denotation (dictionary meaning) and connotation (associations that may not be part of a formal definition).

这就是英语师可能会注意到外延(字典意义)和隐含意义(可能不是正式定义的一部分的联系)之间的区别的地方。

Each word has its own potential for connotation and denotation, and when writers rub one word against the other, they are often rewarded with a sudden insight, an unexpected clarification.

每个词都有其自身的内涵和外延潜力，当作家将一个词与另一个词摩擦时，他们通常会获得突然的洞察力和意想不到的澄清。