correction vs amendment

correction and amendment both are nouns.

Word	Noun	Adjective	Verb	Adverb
correction	Yes	No	No	No
amendment	Yes	No	No	No

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

correction: the act of offering an improvement to replace a mistake; setting right
amendment: the act of amending or correcting

Other hyponyms of correction include redress, remediation, remedy, retribution, compensation, recompense, emendation.

correction (noun)	amendment (noun)
the act of offering an improvement to replace a mistake; setting right	the act of amending or correcting
treatment of a specific defect	a statement that is added to or revises or improves a proposal or document (a bill or constitution etc.)
the act of disciplining
a drop in stock market activity or stock prices following a period of increases
a rebuke for making a mistake
something substituted for an error
a quantity that is added or subtracted in order to increase the accuracy of a scientific measure