Some words sound alike but don’t mean the same thing. Such words are called homophones, and they are common in English and in other languages as well. Dryer and drier are just two examples of English homophones. There are quite literally hundreds of them from which to choose, but today, we are talking about these two. Drier and dryer are indistinguishable in spoken English; a skilled listener must depend on context to determine which word is being used. While the listener must rely solely on context to tell these words apart, in written English, readers have a letter spelling difference to guide them on the word to choose. While these words differ by just one letter in their spelling, they are different parts of speech, and cannot be substituted for one another.