totally vs altogether

totally is not a noun while altogether is a noun.

Word	Noun	Adjective	Verb	Adverb
totally	No	No	No	Yes
altogether	Yes	No	No	Yes

As adverbs, totally and altogether are synonyms defined as:

totally and altogether: to a complete degree or to the full or entire extent; Completely or entirely

Other synonyms of totally include all, completely, entirely, right, whole, wholly.

totally (noun)	altogether (noun)
	informal terms for nakedness

totally (adverb)	altogether (adverb)
to a complete degree or to the full or entire extent; Completely or entirely	with everything included or counted
	with everything considered (and neglecting details)
	to a complete degree or to the full or entire extent; Completely or entirely