restrictiveness vs unpermissiveness

restrictiveness and unpermissiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
restrictiveness	Yes	No	No	No
unpermissiveness	Yes	No	No	No

As nouns, restrictiveness and unpermissiveness are synonyms defined as:

restrictiveness and unpermissiveness: a lack of permissiveness or indulgence and a tendency to confine behavior within certain specified limits

restrictiveness (noun)	unpermissiveness (noun)
a lack of permissiveness or indulgence and a tendency to confine behavior within certain specified limits	a lack of permissiveness or indulgence and a tendency to confine behavior within certain specified limits
a grammatical qualification that makes the meaning more specific (`red hat' has a more specific meaning than `hat')