| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | diagramo | diagramoj |
| Accusative | diagramon | diagramojn |
| Catalan | diagrama |
|---|---|
| Czech | diagram; graf |
| Dutch | diagram |
| English | diagram |
| German | Diagramm; Kurvenbild; Schaubild; Schaltbild |
| Papiamento | diagram |
| Portuguese | diagrama |
| Spanish | diagrama |
| Tagalog | balangkás |
| Welsh | diagram |