火炎

1. Origins, structure, and basic meaning

• Structure: 火炎 is a noun read かえん, meaning a flame or blaze produced by burning.
• Basic usage: It can describe keeping a safe distance from a flame in an experiment or a large red flame depicted in a picture.
  • 実験では火炎から十分に距離を取った。 says that sufficient distance was kept from the flame during the experiment; 絵の中央に赤い火炎が大きく描かれている。 says that a large red flame is painted in the center of the picture.

2. Common pitfalls and similar expressions

• 火炎から距離を取る
  • から marks the flame as the point from which the safe distance is measured.
• 中央に描かれる
  • に marks the center of the picture as where the red flame is depicted.
• 火炎 and 炎
  • Both mean flame, while 火炎 is relatively formal in fire or experimental contexts and 炎 is the general word for a flame.