overemphasise vs magnify

overemphasise and magnify both are verbs.

Word	Noun	Adjective	Verb	Adverb
overemphasise	No	No	Yes	No
magnify	No	No	Yes	No

As verbs, magnify is a hypernym of overemphasise; that is, magnify is a word with a broader meaning than overemphasise:

Other hypernyms of overemphasise include amplify, exaggerate, hyperbolise, hyperbolize, overdraw, overstate.

overemphasise (verb)	magnify (verb)
place special or excessive emphasis on	increase in size, volume or significance
	make large
	to enlarge beyond bounds or the truth