familiarity

immediacy

affinity, kinship

commitment, devotedness, devotion

affection, attachment, fondness, love, passion

constancy, faithfulness, fidelity

amity, fellowship, friendship, goodwill

affability, conviviality, cordiality, geniality

mutuality

cliquishness, clubbiness

blunder, error, flub, fumble, goof, lapse, miscue, misstep, mistake, oversight, slip, slipup, stumble

discourtesy, incivility, offense (or offence)

foul-up, muff

misapprehension, miscalculation, misconception, misjudgment, misstatement, misunderstanding

association, experience, exposure, intimacy, involvement

initiation, introduction

awareness, comprehension, conception, inkling, notion, understanding

education, enlightenment, grounding, information, instruction, learning, schooling, training