A person who knows many languages is called Polyglot (বহুভাষাবিদ).
One who eats Human flesh is called Cannibal (নরমাংস খাদক).
A person who makes maps is known as Cartographer (মানচিত্র কর) .
A person who hates mankind is called Misanthropist(মনুষ্য বিদ্বেষী) .

Source: Applied English Grammar and Composition by P. C. Das