flash bulb vs flash lamp

flash bulb and flash lamp both are nouns.

Word	Noun	Adjective	Verb	Adverb
flash bulb	Yes	No	No	No
flash lamp	Yes	No	No	No

As nouns, flash bulb and flash lamp are synonyms defined as:

flash bulb and flash lamp: a lamp for providing momentary light to take a photograph

Other synonyms of flash bulb include flash, flashbulb, flashgun, photoflash.

flash bulb (noun)	flash lamp (noun)
a lamp for providing momentary light to take a photograph	a lamp for providing momentary light to take a photograph