Flammable materials catch fire easily, while combustible materials can burn under certain conditions:

 Flammable materials catch fire easily, while combustible materials can burn under certain conditions:

Flammability

A material is flammable if it ignites easily at normal temperatures, or if its flash point is below 37.8°C (100°F). Flammable liquids release vapors that can ignite easily at normal working temperatures.

Combustibility

A material is combustible if it can burn in air under certain conditions, or if its flash point is between 37.8°C and 93.3°C (100°F and 200°F). Combustible liquids are less likely to catch fire than flammable liquids. 

Flammable and combustible materials can be dangerous and pose a risk of fire and explosion. To protect against fire and explosion, you can: 

Store safely: Follow strict storage requirements for flammable and combustible liquids. 

Use personal protective equipment: Wear non-flammable, non-absorbent gloves, boots, and protective clothing. You can also use a face mask or oxygen supply to avoid breathing in harmful vapors. 

Minimize flammable vapors: Reduce the amount of flammable vapors and mists released into the air to prevent a flammable atmosphere.