権勢|けんせいkensei[1]atamadaka (head-high)

1. nounpower; influence

• Synonym権威けんいWrittenWritten/formal prose. Authority that makes others submit; also an expert in a field, as in 「医学の権威」. 「権勢」 is about holding power and flaunting it.
• Synonym力ちからNeutralNeutral and the most versatile: strength or force, as in 「権力」「力がある」. It does not specifically mean the sway of the powerful.
• Synonym威力いりょくNeutralNeutral. Mighty force that inspires fear; also used of the impressive power or performance of machines and techniques.
• Synonym威光いこうWrittenWritten/formal prose. Dignity that naturally inspires awe and obedience, as in 「親の威光」.
• Synonym勢威せいいWrittenWritten/formal prose, and rare. Combines power and might; very close in meaning to 「権勢」.
• Related影響力えいきょうりょくNeutralNeutral and objective: the ability to influence or sway others, without the nuance of wielding and flaunting power.

For plain power say 「権力」. For the dazzling sway of someone in power, use 「権勢」, as in 「権勢を誇る」「権勢を振るう」. Use 「権威」 for expert authority and 「影響力」 for influence; 「威力」 is fearsome might and 「威光」 awe-inspiring dignity.

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

1. 権力けんりょくを握にぎって、威勢いせいを誇ほこること。