How to say "dynamics" in Japanese

• 力学りきがくCommon
  nounCovers dynamics in the technical, physical sense: the branch of mechanics dealing with forces and motion. Use this in scientific or engineering contexts, where it is the standard technical term.
  熱力ねつりょく学がくの背後はいごには、第だい１巻かんで学まなんだ力学りきがくの法則ほうそくにしたがう原子げんしや分子ぶんしの運動うんどうがあります。↗

  Behind thermodynamics lie the movements of atoms and molecules following the laws of motion learned in the first volume.
• ダイナミクスCommon
  nounThe loanword, used for dynamics in physics as well, but especially for broader or figurative senses such as group, system, or market dynamics. It is the natural choice outside strict physics terminology.

力学 is the established term for dynamics as a branch of physics (mechanics), while 「ダイナミクス」 is the loanword used for dynamics in broader or figurative senses, such as group dynamics or market dynamics.

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

• 力学りきがくmechanics
• ダイナミクスdynamics
• 動力学どうりきがくdynamics
• 強弱法きょうじゃくほうdynamics
• 動学どうがくdynamics
• デュナーミクdynamics