心臓|しんぞうshinzou[0]heiban (flat)
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- noun, anatomyheart
- nounguts; nerve; cheek; gall; spine
- nounheart (of something); central part
- SynonymハートNeutralA loanword, mostly for feelings and love or the hearts suit in cards, as in 「ハートマーク」; rarely means the physical organ.
- Synonym心しんNeutralRead しん; mostly seen in compounds for the heart or a core, as in 「心筋」 and 「心肺」; rarely used on its own.
- Synonym心の臓しんのぞうWrittenWritten/formal prose: an old-fashioned name for the heart organ, heard today mostly in period dramas.
- Synonym心臓部しんぞうぶNeutralThe area of the chest where the heart sits; often figurative for the most vital part of an organization or machine, as in 「工場の心臓部」.
- Related核心かくしんNeutralThe most important central part of something, as in 「問題の核心」; covers only the figurative sense of 「心臓」.
Use 「心臓」 for the organ itself or for courage and nerve. Say 「ハート」 for feelings and love, 「心臓部」 for the most crucial part of an organization or machine, and 「核心」 for the essence of a matter.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


