bandwagon vs waggon

bandwagon and waggon both are nouns.

Word	Noun	Adjective	Verb	Adverb
bandwagon	Yes	No	No	No
waggon	Yes	No	No	No

As nouns, waggon is a hypernym of bandwagon; that is, waggon is a word with a broader meaning than bandwagon:

bandwagon: a large ornate wagon for carrying a musical band
waggon: any of various kinds of wheeled vehicles drawn by an animal or a tractor

Other hypernyms of bandwagon include wagon.

bandwagon (noun)	waggon (noun)
a large ornate wagon for carrying a musical band	any of various kinds of wheeled vehicles drawn by an animal or a tractor
a popular trend that attracts growing support	a car that has a long body and rear door with space behind rear seat