experimental vs empirical

experimental and empirical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
experimental	No	Yes	No	No
empirical	No	Yes	No	No

experimental (adjective)	empirical (adjective)
relating to or based on experiment	derived from experiment and observation rather than theory
relying on observation or experiment	relying on medical quackery
of the nature of or undergoing an experiment