The Top Ten Tips for Learning Vocabulary

compound nouns are fixed expressions formed from two or three words linked together in different ways. There are compounds we write as one word, like keyboard, software and popcorn. But we write some of them as two separate words, like post office and ice cream. Now it's time for a quiz. I'm going to say a compound nou and i'm also going to say whether we write it as oneword, two words, or with hyphens. And you decide if this is true or false.