Looking at a photograph of a beautiful beach in Phuket, Thailand might give you the strange feeling of homesickness, even though you've never been there. There's a word for that emotion. The Finnish word kaukokaipuu means the craving of a distant land with an intensity that almost feels like homesickness. The Dusun Baguk people of Indonesia have a word that describes a feeling you may have experienced while talking to the CEO of your company: malu, or the experience of feeling inferior and awkward around people of higher status. For the record, research shows this feeling is nothing to be ashamed of, but is rather an appropriate reaction that is a sign of good manners. These highly specific emotions, all of which you've probably felt but never before had a word for, are among those collected in British researcher Tiffany Watt Smith's book, "The Book of Human Emotions."