beautify vs improve

beautify and improve both are verbs.

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

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

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

beautify (verb)	improve (verb)
make more beautiful	get better
make more attractive by adding ornament, colour, etc.	to make better
be beautiful to look at