difference vs words

difference and words both are nouns.

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

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

difference (noun)	words (noun)
the quality of being unlike or dissimilar	words making up the dialogue of a play
a disagreement or argument about something important	an angry dispute
a variation that deviates from the standard or norm	the text of a popular song or musical-comedy number
the number that remains after subtraction; the number that when added to the subtrahend gives the minuend	the words that are spoken
a significant change	language that is spoken or written