superannuated vs obsolete

superannuated and obsolete both are adjectives.

Word	Noun	Adjective	Verb	Adverb
superannuated	No	Yes	No	No
obsolete	No	Yes	No	No

As adjectives, superannuated and obsolete are synonyms defined as:

Other synonyms of superannuated include out-of-date, outdated.

superannuated (adjective)	obsolete (adjective)
old; no longer valid or fashionable	no longer in use
too old to be useful	old; no longer valid or fashionable