| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | alno | alnoj |
| Accusative | alnon | alnojn |
| Catalan | vern |
|---|---|
| Czech | olše |
| Danish | el |
| Dutch | els; elzeboom |
| English | alder |
| English (Old English) | alor |
| Finnish | leppä |
| French | aune; aulne |
| German | Erle; Els; Eller |
| Hungarian | éger |
| Italian | ontano |
| Latin | alnus |
| Luxemburgish | Eller |
| Norwegian | older; or |
| Polish | olsza |
| Portuguese | amieiro |
| Romanian | arin |
| Russian | ольха |
| Saterland Frisian | ällerne Boom |
| Spanish | aliso |
| Swedish | al |
| Ukrainian | вільха |
| Welsh | gwernen |
| West Frisian | els; elzebeam; elzenbeam |