time-tested vs tried and true

time-tested and tried and true both are adjectives.

Word	Noun	Adjective	Verb	Adverb
time-tested	No	Yes	No	No
tried and true	No	Yes	No	No

As adjectives, time-tested and tried and true are synonyms defined as:

Other synonyms of time-tested include tested, tried.

time-tested (adjective)	tried and true (adjective)
tested and proved to be reliable	tested and proved to be reliable