桁違い

1. Origins, structure, and basic meaning

• Structure: 桁違い, read けたちがい, means vastly different in level or literally orders of magnitude apart.
• Basic usage: 記録は桁違いだった praises an exceptional record; 数字が桁違いだ flags a numerical discrepancy.

2. Common pitfalls and similar expressions

• Figurative level and numerical magnitude
  • Athletic performance selects the figurative sense; an estimate and suspected input error select a literal place-value difference.