wideband vs broadband

wideband and broadband both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wideband	No	Yes	No	No
broadband	No	Yes	No	No

As adjectives, wideband and broadband are synonyms defined as:

wideband and broadband: responding to or operating at a wide band of frequencies

wideband (adjective)	broadband (adjective)
responding to or operating at a wide band of frequencies	responding to or operating at a wide band of frequencies
	of or relating to or being a communications network in which the bandwidth can be divided and shared by multiple simultaneous signals (as for voice or data or video)