established vs old-line

established and old-line both are adjectives.

Word	Noun	Adjective	Verb	Adverb
established	No	Yes	No	No
old-line	No	Yes	No	No

established (adjective)	old-line (adjective)
brought about or set up or accepted; especially long established	long-established
introduced from another region and persisting without cultivation	adhering to conservative or reactionary principles
conforming with accepted standards
shown to be valid beyond a reasonable doubt
settled securely and unconditionally