Familiarity

n.calm, capableprofessional

Meaning 1

Knowledge or ease that grows through repeated contact with someone or something.

Reach for it when describing practical comfort based on prior experience

Familiarity with the controls helped Ana respond calmly to the alarm.

everyday
knowledge
understanding matters without emotional comfort
not when Knowledge can come from study without direct contact.
professional
experience
practice over time supports capable action
not when Experience may be broad while familiarity is specific.
professional
fluency
use has become smooth and nearly automatic
not when Fluency overstates basic recognition or comfort.
formal
acquaintance
limited knowledge of a person or subject is meant
not when Acquaintance suggests less ease than familiarity.

Informal closeness in manner or relationship.

Reach for it when naming social ease that may be welcome or overly presumptuous

Years of shared rehearsals gave the musicians an easy familiarity.

warm
closeness
the relationship itself matters more than knowledge
not when Closeness can be emotional without informal behavior.
warm
easy rapport
relaxed mutual communication is the positive quality
not when Rapport requires reciprocity; familiarity can be one-sided.
formal
overfamiliarity
informality has crossed a boundary
not when This alternative changes the judgment from positive to critical.

working familiarity
A working familiarity with maps is enough for the course.
gain familiarity
New volunteers gain familiarity through paired shifts.
comfortable familiarity
Their comfortable familiarity made the interview feel natural.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.