"o heavy lightness! serious vanity! " is an example of

simile

oxymoron

metaphor

hyperbole

Oxymoron

An oxymoron is a rhetorical device that represents a contradiction or reveals a paradox. However, the oxymoron is a deliberate contradiction, as opposed to one that arises from confusion or by mistake. Oxymorons are extremely common in literature. In this case, the author uses an oxymoron by saying "heavy lightness" as lightness, by definition, is "light," which is the complete opposite of "heavy."

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explanation:

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1) technical language (writen technical volcabulary)

2) ordinary langauge

3) literary language (because it's text with a rich, descriptive vocabulary)

4) scientific texts (includes texts such as medical reports, legal texts, academic journals, etc)

5) informational texts (texts that are used to convey information to readers, such as technical guides, costumer guides, textbooks)

6) poetic texts. because they are essays, short stories, poems, etc.