list of synonyms of word familiarity

• acquaintance
• conversance
• conversancy
• information (generic term)

• usualness (generic term)
• unfamiliarity (antonym)

• intimacy
• closeness
• friendliness (generic term)

• casualness
• informality (generic term)

• impropriety
• indecorum
• liberty
• misbehavior (generic term)
• misbehaviour (generic term)
• misdeed (generic term)