Discussion vs Explanation - What's the difference?

As nouns the difference between discussion and explanation

is that discussion is conversation or debate concerning a particular topic while explanation is the act or process of explaining.

(wikipedia discussion)

(en noun)

Conversation or debate concerning a particular topic.

There was then a long discussion of whether to capitalize words like "east".

This topic is not open to discussion .

Text giving further detail on a subject.

Under each heading, you will find a discussion section.

(wikipedia explanation)

(en noun)

The act or process of explaining.

The explanation was long and drawn-out.

Something that explains, makes understandable.

An explanation for each UFO sighting was easily found.

(euphemistic) An excuse, apologetic justification not based on enough evidence.

expense.

* (act or process of explaining) clarification, elucidation, elaboration

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