broadband vs wideband

broadband and wideband both are adjectives.

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

As adjectives, broadband and wideband are synonyms defined as:

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

broadband (adjective)	wideband (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)