Arepetitive image or idea in a text is a

A repetitive image or idea in a text is a motif.

Explanation

A motif is an idea, element or aspect that is repeated at multiple times throughout a text to highlight the theme or message behind the text, the author is referring to.

An idea can be referred to as motif only if it used frequently.

The re-currency can also take place in various forms.

A motif provides the completed structural framework to form the theme.

Examples can be seen in Shakespeare's Romeo and Juliet- the phrase 'light and dark' is repeated in other forms like the night (moon) is no match for Juliet's beauty.

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