| Subject | English | Estonian |
| IT | adding device | liitmisseade (liitmisseade arvutites) |
| IT | adding device | summaator |
| IT | adding machine | summeerimismasin |
| IT | adding machine | liitmismasin |
| IT | adding machine | summeermasin |
| ed. | children's word game by adding -pi after a stressed syllable | pi-keel (laste mängukeel, milles rõhulise silbi lõppu lisatakse -pi) |