List of nouns with vowel change (umlaut) in the plural.
Some of you might have encountered plurals such as bok böcker, similar to English goose geese, so I thought I’d post this list I made a while back. I think it’s near-complete. For historical reasons, all these words are en-words, except for land and stånd. Beware of that some of these words are very uncommon so you will likely never encounter them, however, many are extremely common.
For those of you who can’t see the table, it’s available here: http://i.imgur.com/Zvstdz9.png
Swedish native speaker here. It's a great list. Just a few comments:
"Spänner" and "spänger" are not used anymore (apart from possibly in some dialects). Use "spannar" and "spångar" instead!
"Ständer" feels very old fashioned even though you can still happen upon it in expressions or old songs. "Stånd" in plural feels more natural. (Also note that the most used meaning of "stånd" is a stand, as on a market.)
"Stav" also means staff (typically of wood or metal) but with the plural "stavar". I would say a lot of Swedes wouldn't even know the meaning listed here. It's very uncommon.
This is very interesting, considering letter (like in the alphabet, not the other one) in German is called "Buchstabe" (literally book-staff, like the Swedish one), while staff/stick is called Stab. However when they turn to plural:
Buchstabe - Buchstaben
Stab - Stäbe
Funny that German does the vowel change in only one of these and Swedish in both.