RichThesaurus
pertinaciousness
vs
unmanageableness
pertinaciousness
noun
The state or characteristic of being pertinacious.
unmanageableness
noun
The state or quality of being unmanageable.
How often have the words
pertinaciousness
and
unmanageableness
occurred in a corpus of books?
(source:
Google Ngram Viewer
)