Answer and Explanation:
In relation to the narrative voice, while "Ancient Mariner" presents the mariner himself as one who recounts his sufferings and misfortunes, "Frankenstein" presents both Victor and the acronym as a narrative voice, showing the point of view of both and allowing the reader to understand the creature's suffering told by itself.
The themes between the two works are similar, as they show the suffering of the human being as a result of his flawed acts. However, "Frankenstein" also presents the suffering created by human hypocrisy and superficiality in relation to physical appearances.
As literary techniques both works present a strong symbolism and allegories to present their theme and development. "Frankestein" also makes a strong use of foreshadowing, advancing information to the reader and allusions making the narrative more dynamic.
