This is the 332nd most frequent Norwegian word.
johansen
"Johansen" is a common Norwegian surname meaning "son of Johan."
In this sentence, 'Johansen' is used as a proper noun representing a name; it's the last name of a person.
Johansen er navnet på en kjent norsk arkitekt.
Johansen is the name of a well-known Norwegian architect.
Here, 'Johansen' is again a proper noun, but it refers to a family unit with that last name.
Familien Johansen bor i huset ved elven.
The Johansen family lives in the house by the river.
In this instance, 'Johansen' is used to reference a subject (a person or entity) known by that name, implying its reputation or influence.