ichidan verb, transitive verb
Physical construction of buildings, structures, or large-scale works. Emphasizes the process of building up from the ground.
彼らは新しい橋を築き上げた。
They built a new bridge.
この城は
This castle was built up over many centuries.
ichidan verb, transitive verb
Abstract use: building up a fortune, reputation, relationship, system, or enterprise through sustained effort.
彼は一代で財産を築き上げた。
He built up a fortune in one generation.
長年の信頼関係を築き上げることが大切だ。
It is important to build up a trusting relationship over many years.