Here's why it's not a specific language device:
* Not a figure of speech: It doesn't use figurative language to create a special effect.
* Not a grammatical structure: It's not a specific type of sentence structure or clause.
* Not a rhetorical device: It doesn't aim to persuade or evoke emotion through language.
However, "much more" can contribute to the following:
* Emphasis: It emphasizes the quantity or degree being described, making it seem greater or more significant.
* Comparison: It implicitly compares something to a previous state or another entity, highlighting a significant difference.
* Descriptive language: It can add detail and specificity to a description.
Example:
"The new design is much more efficient than the old one."
Here, "much more" emphasizes the improvement in efficiency, creating a strong comparison and making the new design seem superior.
Therefore, while "much more" isn't a specific language device, it's a phrase that contributes to a variety of language effects depending on its context.