Nøkkelnummeret står på sikkerhetskortet.

Because Norwegian very often makes compound nouns by joining words together.

• nøkkelnummeret = nøkkel
  • nummer
    • -et
• sikkerhetskortet = sikkerhet
  • sikkerhets-
    • kort
      • -et

This is much more normal in Norwegian than in English. Where English often writes key number or security card as two words, Norwegian typically combines them into one noun.

The ending -et is the definite singular ending for many neuter nouns in Norwegian.

So:

• et nummer = a number
• nummeret = the number

and:

• et kort = a card
• kortet = the card

In compounds, the last part decides the gender:

• nøkkelnummer has nummer as its main part, so it is neuter
• sikkerhetskort has kort as its main part, so it is also neuter

That is why both become definite with -et.

In Norwegian, the definite article is usually attached to the end of the noun instead of standing as a separate word.

So:

• nummeret = the number
• kortet = the card

This is one of the biggest differences from English. Instead of the key number, Norwegian says nøkkelnummeret.

It breaks down like this:

• nøkkel = key
• nummer = number
• -et = the

So nøkkelnummeret literally means the key number.

Even though nøkkel by itself is a separate noun, in this sentence it functions as the first part of a compound noun.

That -s- is a linking element often used in Norwegian compounds.

So:

• sikkerhet = security
• sikkerhetskort = security card

The -s- does not have a separate meaning here. It simply helps connect the parts of the compound. English learners often want to interpret it as a possessive 's, but that is not what it is doing here.

This is a very common question, because it sounds strange if you translate word for word.

The verb stå literally means stand, but in Norwegian it is also often used when something is written, printed, or shown somewhere.

So in this sentence, står på sikkerhetskortet means something like:

• is printed on the security card
• appears on the security card
• is written on the security card

Using er here would sound less natural in this context. Norwegian often prefers stå for information that appears in writing.

Står is the present tense of å stå.

• å stå = to stand
• står = stands / is standing

But again, in sentences about written information, står often means is written or appears rather than physically standing.

På usually means on, and here it is used because the information is located on the surface of the card.

That is very natural in Norwegian:

• Det står på kortet. = It is written on the card.
• Det står på skjermen. = It is on the screen.
• Det står på lappen. = It is written on the note.

So på is the normal preposition when something is written or printed on an object or surface.

Yes, it is completely normal.

The sentence follows standard Norwegian main-clause word order:

• Nøkkelnummeret = subject
• står = verb
• på sikkerhetskortet = prepositional phrase

So the pattern is:

subject + verb + other information

That is the ordinary structure of a simple statement in Norwegian.

Literally, yes, if you translate each word separately. But that is not how it should be understood in normal English.

A better natural interpretation is:

• is on the security card
• is written on the security card
• appears on the security card

This is a good example of why direct word-for-word translation can be misleading.

No. Norwegian nouns are not capitalized unless they begin a sentence or are part of a proper name.

So:

• nøkkelnummeret stays lowercase
• sikkerhetskortet stays lowercase

This is different from German, where all nouns are capitalized.

The two vowels many English speakers notice here are:

• ø in nøkkelnummeret
• å in står

A simple learner-friendly guide:

• ø is a rounded vowel that does not exist directly in standard English. You can think of it as somewhat like the vowel in bird or her, but with rounded lips.
• å is roughly like the vowel in British English law or more, though exact pronunciation depends on accent.

You do not need perfect pronunciation immediately, but it is worth noticing that these are distinct Norwegian vowels, and changing them can change the word.