Many appliance bulbs have finite specifications for proper fit, long life, and safety.
Ovens, microwaves, ranges, and dryers typically use a standard screw base (E26) bulb with an A15 glass shape. For these appliances, it is imperative that you use a bulb rated for high heat. Incandescent or halogen options are usually recommended.
Many range hoods and exhaust fans utilize a "twist and lock" base to maintain excellent contact despite vibration from the fan.
Rough duty and shatterproof bulbs are also available for unique applications.
Energy efficient LED bulbs are a great option for many hard to change locations, and offer significant improvements in life over incandescent.