M to Magnetic field

Magnetic levitation to Male

Maledict to Manila

Manila Bay to Margaret Thatcher

Margarine to Marsileaceae

Marsupial to Match Game

Matchbook to Meade

Meadow Buttercup to Megalith

Megalomania to Meprobamate

Mercantilism to Methane

Methanol to Microprocessor

Microscope to Millions

Millipede to Missouri Compromise

Missouri River to Moment of Truth

Momotus to Monterrey

Montevideo to Mother

Mother Goose to Mucín

Muckraker to Mushroom poisoning

Mushy peas to Mysore

Mystery play to Mysticism