Questions & Answers about Bollarnir og eplin eru hér.
How does bolli (cup) become bollarnir (the cups)?
How do we know eplin means "the apples" in the plural and not just "the apple"?
Why are the words for "the" attached to the end of the nouns?
In Icelandic, the definite article ("the") isn't a separate word like it is in English. Instead, it gets attached to the end of the noun as a suffix. That is why "cups" is bollar, but "the cups" becomes the single word bollarnir.