what are the most useful words when creating a prompt
The most useful words when creating a prompt depend on the type of prompt and the desired outcome. However, here are some general categories of useful words that can be incorporated into prompts:

Action words: These are verbs that prompt the reader to take a specific action or complete a task, such as analyze, compare, evaluate, describe, explain, interpret, synthesize, or critique.

Topic-specific words: These are words related to the subject matter or topic of the prompt, such as biology, history, mathematics, literature, environmental science, or politics.

Specific instructions: These are words that provide clear instructions on what is expected of the reader, such as write an essay, create a presentation, design an experiment, solve a problem, or make a recommendation.

Adjectives: These are words that describe the nature or qualities of the prompt, such as complex, challenging, creative, innovative, persuasive, or thought-provoking.

Contextual words: These are words that provide context for the prompt, such as in today's world, in light of recent events, or in the context of the assigned reading.

In general, the most useful words when creating a prompt are those that are clear, specific, and provide a clear direction for the reader.
Give me more examples.
Well, you can also try getting the model to impersonate a certain character, for instance: 

You are an expert in finance, could result in better finance-related results.

You are a world renowned artist, could result in better art-related responses.

You get the idea!