If two words look similar and sound similar, they probably have similar meanings... right? Not always. For example, take the words "appraise" and "apprise." Only one letter is missing from the latter, so how could the two words not be close to meaning the same thing? Well, actually, appraise means to estimate the monetary value of something (appraise the value of a house, for example) or to estimate the importance of something (such as to appraise the writing of Shakespeare). Apprise, on the other hand, means to give notice to or inform (for instance, to be apprised of a friend's travel plans).