炭|すみsumi[2]odaka (tail-high)

1. nouncharcoal
2. nouncharred remains

• Synonym木炭もくたんNeutralA Sino-Japanese term for fuel made by charring wood, or a charcoal stick for sketching; 「炭」 is the native word, mainly charcoal but also charred remains.
• SynonymチャコールNeutralA loanword for charcoal or charcoal gray, used mostly in color and product names such as 「チャコールグレー」; 「炭」 is the everyday native term.

Everyday talk about charcoal as fuel uses 「炭」, as in 「炭火焼き」 and 「炭を起こす」. Choose 「木炭」 for the formal Sino-Japanese term, and 「チャコール」 for color and product names like 「チャコールグレー」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （すみ）木材もくざいなどを乾溜かんりゅうし、炭素たんそ分ぶんのみを残のこしたもの。木炭もくたん。