| A | B |
|---|
| potato | The thick, rounded underground stem of a leafy plant |
| potatoes | More then one thick, rounded underground stem of a leafy plant |
| zero | The number 0, which means no quantity or amount at all |
| zeroes | More then one number 0. |
| tomato | The round, juicy fruit of a plant. |
| tomatoes | More then one round, juicy fruit of a plant |
| piano | A musical instrument |
| pianos | More then one of this type of musical instrument |
| hero | A person who is looked up to by others because of his or her great achievements or fine qualities. |
| heroes | More then one person who is looked up to by others because of his or her great achievements or great qualities. |
| radio | A way of sending sounds through the air without the use of wires. |
| radios | More then one way of sending sounds through the air without the use of wires. |
| echo | The repeating of a sound. |
| echoes | More then one repeating of a sound. |
| mosquitoes | A small insect with two wings |
| studios | More then one place where an artist or craftsperson works. |
| centuries | More then one period of one hundred years. |
| rodeos | More then one show with contests in horseback riding, roping, and other skills. |
| glossaries | More then one alphabetical list of difficult words and their meanings. |
| dynamos | More then one electric motor or generator. |
