tout ensemble vs on the whole

tout ensemble is a noun but on the whole is not a noun.

Word	Noun	Adjective	Verb	Adverb
tout ensemble	Yes	No	No	Yes
on the whole	No	No	No	Yes

As adverbs, tout ensemble and on the whole are synonyms defined as:

tout ensemble and on the whole: with everything considered (and neglecting details)

Other synonyms of tout ensemble include all in all, altogether.

tout ensemble (noun)	on the whole (noun)
a total impression or effect of something made up of individual parts
an assemblage of parts or details (as in a work of art) considered as forming a whole

tout ensemble (adverb)	on the whole (adverb)
with everything considered (and neglecting details)	with everything considered (and neglecting details)