As adjectives the difference between antiquated and vestigial
is that antiquated is old-fashioned, out of date while vestigial is of or pertaining to a vestige or remnant; like a trace from the past.
antiquated
English
Usage notes
Said of abstract concepts (such as doctrines, notions, ideas, principles, opinions, philosophies, methods, and words), but also of physical objects such as doors and maps.
Synonyms
* backward
Related terms
()
* antic
* ancient
* antiquary
* antiquarian
* antique
* antiquity
vestigial
English
Adjective
(-)
Of or pertaining to a vestige or remnant; like a trace from the past.
Not fully developed in mature animals.
Derived terms
* vestigial structure
Related terms
* vestige