| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | closed compound | English-speaking countries | Common and easily understood, as in the word 'baseball' | 1 |
| 2 | closed compound | English-speaking countries | Commonly used and understood in English language, such as 'football' and 'airplane' | 1 |
| 3 | closed compound | English-speaking countries | Commonly used in English to create new words by joining two existing words without spaces or hyphens, such as 'firefly' or 'skyscraper'. | 1 |