comprehensiveness vs breadth

comprehensiveness and breadth both are nouns.

Word	Noun	Adjective	Verb	Adverb
comprehensiveness	Yes	No	No	No
breadth	Yes	No	No	No

As nouns, comprehensiveness and breadth are synonyms defined as:

comprehensiveness and breadth: the capacity to understand a broad range of topics

Other synonyms of comprehensiveness include largeness.

comprehensiveness (noun)	breadth (noun)
the capacity to understand a broad range of topics	the extent of something from side to side
completeness over a broad scope	the capacity to understand a broad range of topics