Under my answer to that question, I talked about a category of nouns that exist in Italian. The italian name is "Nomi sovrabbondanti" or "sostantivi sovrabbondanti", the meaning is roughly "overabundant nouns".
There are three subcategories for this type of nouns. Sometimes the plurals or the singulars are interchangeable, other times they have different meanings:
A - Nouns with 1 singular and 2 plurals:
- Sing. — Braccio (A person's arm)
- Plur. 1 — Bracci (armrests on an armchair, the jibs of a mechanical crane, a prison building's wings, etc.)
- Plur. 2 — Braccia (2 or more people's arms)
B - 2 singulars and 2 plurals:
- Sing. 1 — Orecchio (ear, this is the noun commonly used);
- Sing. 2 — Orecchia (this is less used, I'm not sure but I think it's regional);
- Plur. 1 — Orecchie (Ears, this is the plural commonly used);
- Plur. 2 — Orecchia (it seems to be used in the non literal sense, like "A book full of ears")
C - 2 singulars and 1 plural:
- Sing. 1 — Scudiero (squire, henchman);
- Sing. 2 — Scudiere (Same meaning);
- Plur. — Scudieri (this is the only plural)
My question is: Is this category present in other languages? I noticed English doesn't have one, but maybe I'm wrong, so I figured I would bring up this topic.