Compound Nouns. Study more in depth about compound words with this fully animated Google Slides presentation helps students use and punctuate compound nouns in their writing. Fun and engaging compound word puzzles break up the informational slides about closed compounds, open compounds, and hyphenated compounds. Students learn the difference between the three types of compound words, and basic rules about when to use each type. Special attention is given to when and when not to use a hyphen. Rev