refine vs rarify

refine and rarify both are verbs.

Word	Noun	Adjective	Verb	Adverb
refine	No	No	Yes	No
rarify	No	No	Yes	No

As verbs, refine and rarify are synonyms defined as:

Other synonyms of refine include complicate, elaborate.

refine (verb)	rarify (verb)
reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities	make more complex, intricate, or richer
improve or perfect by pruning or polishing
treat or prepare so as to put in a usable condition
attenuate or reduce in vigor, strength, or intensity by polishing or purifying
make more precise or increase the discriminatory powers of
make more complex, intricate, or richer