尚且つ

1. Origins, structure, and basic meaning

• Structure: 尚且つ, read なおかつ, is a connector that adds another fact to the first.
• Basic usage: In この鞄は軽く、尚且つ丈夫に作られている。, the same bag is both lightweight and sturdily made.

2. Common pitfalls and similar expressions

• Addition and contrast
  • 尚且つ adds information. ‘And yet’ can fit a context requiring both speed and accuracy, but the expression does not always connect opposing facts.
• Tone
  • しかも also adds a fact and can feel more conversational. 尚且つ suits explanations that lay out conditions or advantages.