difference vs dustup

difference and dustup both are nouns.

Word	Noun	Adjective	Verb	Adverb
difference	Yes	No	No	No
dustup	Yes	No	No	No

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

difference (noun)	dustup (noun)
the quality of being unlike or dissimilar	an angry dispute
a disagreement or argument about something important
a variation that deviates from the standard or norm
the number that remains after subtraction; the number that when added to the subtrahend gives the minuend
a significant change