rarify vs refine

rarify and refine both are verbs.

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

As verbs, rarify and refine are synonyms defined as:

Other synonyms of rarify include complicate, elaborate.

rarify (verb)	refine (verb)
make more complex, intricate, or richer	reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
	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