flood lamp vs floodlight

flood lamp and floodlight both are nouns.

Word	Noun	Adjective	Verb	Adverb
flood lamp	Yes	No	No	No
floodlight	Yes	No	Yes	No

As nouns, flood lamp and floodlight are synonyms defined as:

flood lamp and floodlight: light that is a source of artificial illumination having a broad beam; used in photography

Other synonyms of flood lamp include flood, photoflood.

flood lamp (noun)	floodlight (noun)
light that is a source of artificial illumination having a broad beam; used in photography	light that is a source of artificial illumination having a broad beam; used in photography

flood lamp (verb)	floodlight (verb)
	illuminate with floodlights