Singular – Plural
Singular – Plural
| Singular | Plural |
| Acre | Acres |
| Army | Armies |
| Arrow | Arrows |
| City | Cities |
| College | Colleges |
| Country | Countries |
| dictionary | dictionaries |
| duty | duties |
| engineer | engineers |
| family | families |
| field | fields |
| flame | flames |
| game | games |
| hoof | hoofs |
| house | houses |
| journey | journeys |
| language | languages |
| leaf | leaves |
| man | men |
| mountain | mountains |
| party | parties |
| problem | problems |
| reason | reasons |
| rule | rules |
| study | studies |
| sum | sums |
| sword | swords |
| tear | tears |
| tourist | tourists |
| town | towns |
| train | trains |
| viewer | viewers |
| wall | walls |
| way | ways |
| week | weeks |
| year | years |