i’d still take this over the ett/en thing in swedish. basically, “ett” and “en” both mean “a” if they come before the word, and “the” if they get smashed onto the end of a word. (e.g., “ett apotek” means “a pharmacy”, but “apoteket” means “the pharmacy”; “en hund” means “a dog”, but “hunden” means “the dog”.)

but despite “ett” and “en” meaning the same thing, they aren’t interchangeable. some words are “ett” words, while others are “en” words, and you just have to remember which ones are which.

to further complicate things, there are some words that can end with “et” or “en”, but each ending means something different. this typically happens with “ett” words using “en” for the plural forms of the word. for example, “barn” means “child”, “ett barn” means “a child”, “barnet” means “the child”, but “barnen” means “the children”. (it’s worth also mentioning that “barn” means either “child” or “children”, depending on the context.)