団塊|だんかいdankai[0]heiban (flat)

1. nounmass; lump; clod; clump
2. noun, geologynodule
3. nounbaby boom generation (of 1947-1949); babyboomer (born between 1947-1949)

• Synonym塊かたまりNeutralThe neutral, everyday word for a lump or clump, also used figuratively for the embodiment of a quality, as in 「欲の塊」; 「団塊」 today mostly means the baby boom generation.
• Synonym集塊しゅうかいWrittenA technical term for cells, molecules and the like that have clustered into one mass; written/formal prose.
• Related集団しゅうだんNeutralA group of many people or things, organized or not, as in 「集団生活」; 「団塊」 stresses a clumped mass or the baby boom generation.
• Related集まりあつまりNeutralA gathering or meeting; unlike 「団塊」, it does not refer to a solid clumped mass.
• Related群ぐんNeutralA group, flock or crowd; also the mathematical 'group', and often seen in written compounds.
• Related集合体しゅうごうたいWrittenA whole formed from many individual things gathered together; abstract and academic, in written/formal prose.
• Antonym散在さんざいWrittenBeing scattered here and there instead of clumped together — the opposite of 「団塊」; written/formal prose.
• Antonym分散ぶんさんNeutralDispersing or breaking up into pieces — the opposite of 「団塊」 massing into a lump; a neutral word.

Today 「団塊」 is mostly used in 「団塊の世代」 for the baby boom generation born 1947–49; for an everyday lump or clump say 「塊」, and for a group of people say 「集団」.

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

1. 地層ちそうのなかにある硬かたい塊かたまり。
2. 物ものが集あつまってできた塊かたまり。