established vs entrenched

established and entrenched both are adjectives.

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

established (adjective)	entrenched (adjective)
brought about or set up or accepted; especially long established	established firmly and securely
introduced from another region and persisting without cultivation	dug in
conforming with accepted standards
shown to be valid beyond a reasonable doubt
settled securely and unconditionally