Apologies if this question title is vague but, is there a word in Japanese
that describes a new word which is formed by switching the 漢字 around?

e.g

> 例文 -> 文例
>
> 運命 -> 命運
>
> 合併 -> 併合

How do you describe this?
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2019-05-06T15:38:19.543
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2019-05-06T15:51:29.210
2020-06-17T08:18:27.500
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question
words kanji
How to describe switching individual 漢字？