Conduction is the movement of something such as heat or electricity through a medium or passage.
An example of conduction is using a metal rod to roast marshmallows and the heat transfers to your hand.
An example of Convection is Boiling Water.
The movement within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
An example is the SUN
The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization