intensifier vs so

intensifier and so both are nouns.

Word	Noun	Adjective	Verb	Adverb
intensifier	Yes	No	No	No
so	Yes	No	No	Yes

intensifier (noun)	so (noun)
a modifier that has little meaning except to intensify the meaning it modifies	the syllable naming the fifth (dominant) note of any musical scale in solmization

intensifier (adverb)	so (adverb)
	in truth (often tends to intensify)
	to a very great extent or degree
	(usually followed by `that') to an extent or degree as expressed
	in the way indicated
	in such a condition or manner, especially as expressed or implied
	in a manner that facilitates
	to a certain unspecified extent or degree
	in the same way; also
	subsequently or soon afterward (often used as sentence connectors)
	(used to introduce a logical conclusion) from that fact or reason or as a result