| Subject | English | Russian |
| gen. | strike a warning note | предупредить |
| gen. | strike a warning note | насторожить |
| telecom. | warning note | предупреждение (oleg.vigodsky) |
| Gruzovik, obs. | in school warning note concerning poor application or misbehavior | нотабена |
| obs. | warning note | нотабене (concerning poor application or misbehavio(u)r) |
| obs. | warning note | нотабена (concerning poor application or misbehavio(u)r) |