例文（１級）：complacency，affectation

She approached her work with a sense of complacency, believing that
she was already at the top of her field.
(彼女は自己満足感を持って仕事に取り組み、すでに自分がその分野のトップにいると信じていた。)

His affectation of wealth and sophistication was transparent to those
who knew him well. (彼の富と洗練さを装った態度は、彼をよく知る人には透けて見えていた。)

complacency： 自己満足
affectation： 気取り