试题题干
Words are arbitrary symbols with independent identities so far as their spelling and pronunciation is concerned. But（）, all words are related in one way or another.
参考答案
正确答案：
试题解析
Sense relations. 不同词汇可以通过这种或那种的方式发生语义上的关系。如synonymy和antonymy。B符合题意。