Feiingen fjerner soten.

It is a noun.

More specifically, feiing is a noun made from the verb å feie. It works a lot like English sweeping when sweeping means the activity itself.

So in this sentence:

• feiing = sweeping / chimney sweeping
• feiingen = the sweeping

It refers to the process or act, not the person doing it.
If you wanted the sweeper / the chimney sweep, you would use a different word, such as feieren.

Because the word is built from:

• fei-
  • -ing → feiing

The stem already ends in i, and the noun ending also begins with i, so you get ii in writing.

Then the definite ending is added:

• feiing = sweeping
• feiingen = the sweeping

So the spelling may look strange to an English speaker, but it is a normal result of how the word is formed.

In Norwegian, the is often added to the end of the noun instead of appearing as a separate word before it.

So:

• sot = soot
• soten = the soot

and

• feiing = sweeping
• feiingen = the sweeping

This is one of the most important differences from English.
Instead of the soot, Norwegian often says soot-the, meaning soten.

Because both nouns are in the definite singular form.

In this sentence:

• feiingen = the sweeping
• soten = the soot

The ending -en is a common definite ending in Bokmål.

A useful thing to know is that many nouns that can be feminine may also appear with -a in some styles of Bokmål. So a learner may sometimes see variation in similar words. But here, -en is completely normal and correct.

Yes, in some varieties of Bokmål, that is possible.

Many nouns ending in -ing are often treated as feminine, and feminine nouns in Bokmål can often take:

• -a in the definite singular

So you may encounter:

• feiinga

However, feiingen is also correct and very common in Bokmål, because feminine nouns can often be treated like common-gender nouns as well.

So:

• feiingen and feiinga can both be possible, depending on style and preference

Fjerner is the present tense of the verb å fjerne, which means to remove.

So:

• å fjerne = to remove
• fjerner = removes / is removing

In Norwegian, the present tense is often formed by adding -r to the verb.

Also, Norwegian present tense often covers both ideas that English separates:

• removes
• is removing

The exact meaning depends on context.

Because this is the normal word order for a simple Norwegian main clause:

subject + verb + object

So here:

• Feiingen = subject
• fjerner = verb
• soten = object

That is very similar to English:

• The sweeping removes the soot

Norwegian does, however, have a strong verb-second pattern in main clauses. That means if another element comes first, the verb still stays in second position:

• I dag fjerner feiingen soten = Today, the sweeping removes the soot

So this sentence uses the basic, straightforward order.

Norwegian uses sot much like English uses soot: it is normally a mass noun, not something you count as separate items.

But mass nouns can still appear in the definite singular form.

So:

• sot = soot in general
• soten = the soot, meaning the specific soot being talked about

This does not mean one soot as a countable object. It just means a specific amount or layer of soot.

A rough English-friendly approximation is:

FAY-ing-en FYER-ner SOO-ten

A few notes:

• Fei- has the Norwegian ei sound, roughly like ay in many learner approximations.
• fj in fjerner is pronounced together, not as a separate hard f plus j as in English spelling.
• The stress is mainly on the first syllable of each word:
  • FEIingen
  • FJERner
  • SOten

This is only an approximation, but it is a helpful starting point for an English speaker.