full treatment vs totality

full treatment and totality both are nouns.

Word	Noun	Adjective	Verb	Adverb
full treatment	Yes	No	No	No
totality	Yes	No	No	No

As nouns, totality is a hypernym of full treatment; that is, totality is a word with a broader meaning than full treatment:

Other hypernyms of full treatment include entireness, entirety, integrality.

full treatment (noun)	totality (noun)
everything available; usually preceded by `the'	the whole amount
	the quality of being complete and indiscriminate
	the state of being total and complete