* A large, open field: In this case, you might be looking for words related to agriculture, nature, or sports.
* A specific field of study: For example, "the big field" could refer to a broad area of research like physics or history.
* A large, open area in general: This could be a field, a park, or a desert.
Once you tell me what kind of "big field" you're interested in, I can give you more specific vocabulary words.