rationale vs dialectics

rationale and dialectics both are nouns.

Word	Noun	Adjective	Verb	Adverb
rationale	Yes	No	No	No
dialectics	Yes	No	No	No

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

rationale: (law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)
dialectics: a rationale for dialectical materialism based on change through the conflict of opposing forces

rationale (noun)	dialectics (noun)
(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)	a rationale for dialectical materialism based on change through the conflict of opposing forces