What is a Symbiotic Word™?

Question

_{This is in the spirit of the What is a Word™/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.}

---

If a word conforms to a special rule, I call it a Symbiotic Word™.

Use the examples below to find the rule.

Symbiotic Words™	Not Symbiotic Words™
GOOGOL	THOUSAND
POKEMON	NINTENDO
ANIMAL	HUMAN
DESK	TABLE
TEXTURE	MATERIAL
DEPENDENT	INDEPENDENT
EMPIRE	KINGDOM
DEFENSE	OFFENSE
SERIES	PARALLEL
FAMILIAR	UNFAMILIAR

CSV Version:

Symbiotic Words™,Not Symbiotic Words™
GOOGOL,THOUSAND
POKEMON,NINTENDO
ANIMAL,HUMAN
DESK,TABLE
TEXTURE,MATERIAL
DEPENDENT,INDEPENDENT
EMPIRE,KINGDOM
DEFENSE,OFFENSE
SERIES,PARALLEL
FAMILIAR,UNFAMILIAR

These are not the only examples of Symbiotic Words™, many more exist.

Answer 1

A word is Symbiotic™ if it

has one or more vowels,

and

taken as a sequence, the vowels form a palindrome.

For example, REIFIED is Symbiotic™

because the vowels are EIIE, a palindrome,

while REIFY is not,

because the vowels are EI, which is not a palindrome.

The words are called Symbiotic™ because

the vowels in SYMBIOTIC, IOI, form a palindrome of the kind indicated.