This is the 847th most frequent Norwegian word.
idf
The term "idf" does not appear to have a meaning in Norwegian.
IDF is used here as an abbreviation for 'Israeli Defense Forces', the military forces of Israel.
Soldatene i IDF er kjent for sin disiplin.
The soldiers in the IDF are known for their discipline.
IDF is mentioned in a general or ambiguous context, implying a need for clarification or additional explanation of its meaning.
Jeg er ikke kjent med denne typen IDF.
I am not familiar with this type of IDF.
IDF is used here as a technical term, referring to 'Inverse Document Frequency' in text processing and information retrieval contexts.