established vs naturalized

established and naturalized both are adjectives.

Word	Noun	Adjective	Verb	Adverb
established	No	Yes	No	No
naturalized	No	Yes	No	No

As adjectives, established and naturalized are synonyms defined as:

established and naturalized: introduced from another region and persisting without cultivation

established (adjective)	naturalized (adjective)
brought about or set up or accepted; especially long established	planted so as to give an effect of wild growth
introduced from another region and persisting without cultivation	introduced from another region and persisting without cultivation
conforming with accepted standards
shown to be valid beyond a reasonable doubt
settled securely and unconditionally