They differ in size but not in kind. 这些东西的区别只是大小不同而实质一样。
Something that differs in form only slightly from something else, as a different spelling or pronunciation of the same word. 异体在形式上只是轻微地不同于其它的东西，如同一单词的不同拼写或发音
One of two or more words that have the same spelling but differ in origin, meaning, and sometimes pronunciation. 同形异义词两个或以上单词拼法相同，但在起源、意义和有时读音上不同
The difference between two points in a system which differ in one respect. 一个系统中在某方面不同的二点之间的差异。
