Final answer:
Anthimeria is the deliberate transfer of a word from one part of speech to another, commonly used in rhetoric for expressive and persuasive language communication.
Step-by-step explanation:
The deliberate transfer of a word from one part of speech to another is technically known as anthimeria. This literary device involves using one part of speech, such as a noun, as if it were another part of speech, such as a verb, thereby creating a dramatic shift in the typical usage of the word. An example of anthimeria would be using 'to friend' someone, taking the noun 'friend' and using it as a verb.
Anthimeria is a part of the larger study of rhetoric, which from the ancient Greeks' point of view, focuses not only on language communication but also on its persuasive power. This device is commonly seen in poetry and artistic literature to add expressive depth or to fulfill a particular dialect or character code-switching, which is the practice of shifting back and forth between linguistic styles depending on the context.