Conduction involves the transfer of heat through direct contact,
while radiation involves the transfer of heat through electromagnetic waves.
Conduction and radiation are two different mechanisms by which heat is transferred from one object to another.
Conduction is the transfer of heat through direct contact between two objects that are at different temperatures. When two objects are in contact, the hotter object transfers some of its heat energy to the cooler object until they reach thermal equilibrium. For example, when you touch a hot stove, heat is transferred from the stove to your hand through conduction.
Radiation is the transfer of heat through electromagnetic waves. Unlike conduction, radiation does not require direct contact between two objects. Instead, heat energy is transferred through the air or space between the two objects. For example, the sun warms the earth through radiation. Heat energy is transferred from the sun to the earth through electromagnetic waves, even though there is no physical contact between them.