Answer:
Rhetorical device has almost the same meaning, but it's more broad: literary devices only are found in literature, rhetorical devices can occur in any sort of speech or writing. So all literary devices are rhetorical devices, but not all rhetorical devices are literary devices.
Explanation:
Adverbial clause is an adverb which is a dependent clause. It's used as an adverb in a sentence to show the time, contrast, conditions, place, reason, concession, purpose or result.
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He says there are no jobs in Italy. Catherine wants to make sure that Rodolpho really loves her, and doesn't simply want to marry into American citizenship. ... Leaving his apartment is like a kind of immigration for her, and she imagines even leaving for Italy with Rodolpho, getting far away from Eddie.