Question

ghoul means :
a miniature model of something
an evil spirit or ghost
an onerous or difficult concern
an idea that is implied or suggested

Explanation:

The word "ghoul" is a noun in the English language. In common usage and in literature, it refers to a supernatural being. Among the given options, "an evil spirit or ghost" aligns with the typical definition of a ghoul. A miniature model is usually referred to by terms like "model" or "miniature". "An onerous or difficult concern" would be more like a "burden" or "problem". "An idea that is implied or suggested" is related to "implication" or "suggestion".

Answer:

an evil spirit or ghost