das Unwissen
ignorance
The state of not knowing something or of having no knowledge in a particular area.
Aus reinem Unwissen hat er einen schweren Fehler gemacht.
Out of pure ignorance, he made a serious mistake.

ignorance
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ignorance
The state of not knowing something or of having no knowledge in a particular area.
Aus reinem Unwissen hat er einen schweren Fehler gemacht.
Out of pure ignorance, he made a serious mistake.

The word consists of the prefix 'Un-', which expresses negation, and the noun 'Wissen' (knowledge). 'Unwissen' (ignorance) therefore literally means 'not-knowing' or 'lack of knowledge'.
Sein Unwissen über die Regeln führte zu Problemen.
His ignorance of the rules led to problems.
To state the reason for an action, 'Unwissen' (ignorance) is very often combined with the preposition 'aus' (out of). The phrase 'aus Unwissen' means 'because one did not know'.
Er hat die Pflanze aus Unwissen falsch gegossen.
He watered the plant incorrectly out of ignorance.
There is a well-known German proverb: 'Unwissenheit schützt vor Strafe nicht.' It means that you are still responsible for a mistake even if you did not know it was a mistake.
Er wusste nicht, dass Parken hier verboten ist, aber Unwissenheit schützt vor Strafe nicht.
He did not know that parking is forbidden here, but ignorance is no excuse.
knowledge
'Kenntnis' and 'Unwissen' are opposites. 'Kenntnis' means that someone knows something, is informed, or has skills in a particular area. 'Unwissen' means that this knowledge is missing. So the difference is simple: with 'Kenntnis', information is present; with 'Unwissen', it is not. 'Kenntnis' can generally refer to specialist knowledge or, in formal contexts, mean that you are informed about something. 'Unwissen' describes the state of not knowing something.

Marias Unwissen über die neuen Regeln führt beim Training zu Problemen.
Maria's ignorance of the new rules causes problems during training.
Vor dem Termin haben die Gäste genaue Kenntnis von den Kosten.
Before the appointment, the guests have precise knowledge of the costs.