big wheel - a person with a great deal of power or influence, especially a high-ranking person in an organization. / tycoon

fishing pond, in common, artificial fishing place

fishing hook, fishhook - a barbed hook, usually metal, used for fishing.

using force

use of force

Kyūjitai form of 圧力: pressure

pressure gauge, an instrument to measure the pressure of liquids or gases

fishing rod; fishing pole / (uncommon) same as above

fishing line

(informal) tree / tree (diagram) / (computing) tree (data structure)