buyout vs takeover

buyout and takeover both are nouns.

Word	Noun	Adjective	Verb	Adverb
buyout	Yes	No	No	No
takeover	Yes	No	No	No

As nouns, takeover is a hyponym of buyout; that is, takeover is a word with a more specific, narrower meaning than buyout:

buyout: acquisition of a company by purchasing a controlling percentage of its stock
takeover: a change by sale or merger in the controlling interest of a corporation

Other hyponyms of buyout include leveraged buyout, strategic buyout.

buyout (noun)	takeover (noun)
acquisition of a company by purchasing a controlling percentage of its stock	a change by sale or merger in the controlling interest of a corporation
	a sudden and decisive change of government illegally or by force