refine vs amend

refine and amend both are verbs.

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

As verbs, amend is a hypernym of refine; that is, amend is a word with a broader meaning than refine:

Other hypernyms of refine include ameliorate, better, improve, meliorate.

refine (verb)	amend (verb)
reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities	to make better
improve or perfect by pruning or polishing	set straight or right
treat or prepare so as to put in a usable condition	make amendments to
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