This is the 793rd most frequent Swedish word.
fru
Wife; Mrs.
In this sentence, 'fru' means 'wife', referring to the speaker's spouse.
Min fru och jag gick på bio i går kväll.
My wife and I went to the cinema last night.
Here, 'frun' also translates to 'wife' but is used in the context of a specific narrative or story.
Den nya frun i berättelsen visade sig vara en mycket intressant karaktär.
The new wife in the story turned out to be a very interesting character.
In this sentence, 'frun' means 'lady' in a context that denotes respect or formality.