併用

1. Origins, structure, and basic meaning

• Structure: 併用 is read as へいよう and is a noun and する verb for using two or more tools, materials, or medicines together.
• Basic usage: Using paper and electronic materials together appears in 紙の資料と電子版を併用する, while checking whether two medicines can be combined appears in 二つの薬を併用できるか確認する.

2. Common pitfalls and similar expressions

• Combination and compatibility
  • It appears both for combining different tools and for checking the compatibility of medicines.
• Difference from 併記
  • Unlike writing two items side by side, this term focuses on actually using two means or substances together.