Questions & Answers about Hver vara er einstök.
Yes — hver can mean different things depending on context.
In Hver vara er einstök, hver means each or every.
That is different from question uses such as:
- Hver er þetta? = Who is this?
- Hvaða vara? = Which product? (more specifically which)
So in this sentence, hver + singular noun gives the sense of each/every.
Yes, it works very similarly.
After hver meaning each/every, Icelandic normally uses a singular noun:
- hver vara = each product / every product
So even though the sentence talks about products in general, the noun stays singular because the idea is each individual item.