photoflash vs flash lamp

photoflash and flash lamp both are nouns.

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

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

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

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

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