me'onein: R. Yishmael says: This is one who passes seven types of magic before the eye (ayin).
The sages say: These are deceivers of the eye. R. Akiva says: These are augurers who assign a "time" (onah) for a particular event, e.g., "the eve of the shemitah year (i.e., the sixth year) is auspicious for grain"; "the pulling out of pulse (as opposed to its harvesting) is detrimental. "
menachesh (a necromancer): (one who interprets natural happenings as signs or portents) e.g., "His bread fell from his mouth; therefore …," "his stick fell from his hand; therefore …," "a snake on his right, a fox on his left, a deer crossed his path; therefore …"