in-between vs intermediate

in-between is not a noun while intermediate is a noun.

Word	Noun	Adjective	Verb	Adverb
in-between	No	Yes	No	No
intermediate	Yes	Yes	Yes	No

in-between (noun)	intermediate (noun)
	a substance formed during a chemical process before the desired product is obtained

in-between (adjective)	intermediate (adjective)
being neither at the beginning nor at the end in a series	lying between two extremes in time or space or state
	around the middle of a scale of evaluation

in-between (verb)	intermediate (verb)
	act between parties with a view to reconciling differences