νῦν/nun

This word describes an action or relates two ideas. It is an adverb.. It is an adverb.

This word can mean now or at the present time. It tells when an action happens.
This word can mean since or because. It introduces an idea that is the basis or reason for something else that is said.
This word can mean therefore or so or for that reason. It introduces an idea that is the result of something that was said before.
This word can mean as it is or in these circumstances. It introduces an idea that would not be expected because of what was said before.