bandwagon vs trend

bandwagon and trend both are nouns.

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

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

Other hypernyms of bandwagon include style, vogue.

bandwagon (noun)	trend (noun)
a large ornate wagon for carrying a musical band	a general tendency to change (as of opinion)
a popular trend that attracts growing support	the popular taste at a given time
	general line of orientation
	a general direction in which something tends to move

bandwagon (verb)	trend (verb)
	turn sharply; change direction abruptly
	to be temporarily popular