Words that sound the same but are spelled differently (a type of homonym) can be stumbling blocks in comprehension or when trying to communicate something in writing. If you know that there's "peek" "peak" and "pique," which one do you use to describe what your character did at the window? If you use the wrong one, then your character has reached the heights (peak) or is having a fit if anger (pique) by the window. Is that what you mean? Is the character simply looking through that window (peek)? As you can see, all these words sound the same but suggest very different things. Here are 32 vocabulary words that are often confused.