burster vs undercharge

burster and undercharge both are nouns.

Word	Noun	Adjective	Verb	Adverb
burster	Yes	No	No	No
undercharge	Yes	No	Yes	No

As nouns, undercharge is a hyponym of burster; that is, undercharge is a word with a more specific, narrower meaning than burster:

Other hyponyms of burster include shot, rocket fuel, rocket propellant, rocket propellent.

burster (noun)	undercharge (noun)
a quantity of explosive to be set off at one time	an insufficient charge
	a price that is too low

burster (verb)	undercharge (verb)
	charge (someone) too little money