declare vs superannuate

declare and superannuate both are verbs.

Word	Noun	Adjective	Verb	Adverb
declare	No	No	Yes	No
superannuate	No	No	Yes	No

As verbs, superannuate is a hyponym of declare; that is, superannuate is a word with a more specific, narrower meaning than declare:

declare (verb)	superannuate (verb)
state emphatically and authoritatively	retire or become ineligible because of old age or infirmity
state firmly	become obsolete
make a declaration (of dutiable goods) to a customs official	declare to be obsolete
declare to be	retire and pension (someone) because of age or physical inability
announce publicly or officially
proclaim one's support, sympathy, or opinion for or against
designate (a trump suit or no-trump) with the final bid of a hand
authorize payments of