distil vs improve

distil and improve both are verbs.

Word	Noun	Adjective	Verb	Adverb
distil	No	No	Yes	No
improve	No	No	Yes	No

As verbs, improve is a hypernym of distil; that is, improve is a word with a broader meaning than distil:

distil: remove impurities from, increase the concentration of, and separate through the process of distillation
improve: to make better

Other hypernyms of distil include ameliorate, amend, better, meliorate.

distil (verb)	improve (verb)
give off (a liquid)	get better
undergo the process of distillation	to make better
extract by the process of distillation
undergo condensation; change from a gaseous to a liquid state and fall in drops
remove impurities from, increase the concentration of, and separate through the process of distillation