alternatively vs instead

alternatively and instead both are adverbs.

Word	Noun	Adjective	Verb	Adverb
alternatively	No	No	No	Yes
instead	No	No	No	Yes

As adverbs, alternatively and instead are synonyms defined as:

Other synonyms of alternatively include or else.

alternatively (adverb)	instead (adverb)
in place of, or as an alternative to	in place of, or as an alternative to
	on the contrary