This is the 469th most frequent Norwegian word.
episoden
"The episode."
Here, 'episoden' refers to a specific TV episode the speaker is talking about, used as a definite singular noun.
Episoden jeg så på TV i går var veldig spennende.
The episode I watched on TV yesterday was very exciting.
In this sentence, 'episode' is again used as a singular noun but in a different context, referring to a specific installment in a series.
Neste episode av serien kommer ut neste uke.
The next episode of the series comes out next week.
Here, 'episode' is used in its indefinite singular form to describe an event or incident.