築く · godan verb (-ku)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 築く | 築かない |
| Polite | 築きます | 築きません |
| Past polite | 築きました | 築きませんでした |
| Past | 築いた | 築かなかった |
| Te-form | 築いて | 築かないで |
| Desire | 築きたい | 築きたくない |
| Potential | 築ける | 築けない |
| Passive | 築かれる | 築かれない |
| Causative | 築かせる | 築かせない |
| Causative passive | 築かせられるalso 築かされる | 築かせられないalso 築かされない |
| Volitional | 築こう | |
| Polite volitional | 築きましょう | |
| Imperative | 築け | 築くな |
| Conditional | 築けば | 築かなければ |
| Tara conditional | 築いたら | 築かなかったら |
godan verb (-ku), transitive verb
Physical construction of buildings, walls, or structures. Often used for large-scale or solid structures.
He built a house on top of the mountain.
城を築くのに何年もかかった。
It took many years to build the castle.
godan verb (-ku), transitive verb
build up; establish; lay (a foundation)
Abstract use: building up a reputation, fortune, relationship, or tradition over time. Often implies steady effort.
彼は一代で財産を築いた。
He built up a fortune in one generation.
二人は信頼関係を築くのに時間がかかった。
It took time for the two to build a trusting relationship.
He laid the foundation of his business when he was young.
She built a relationship of trust with her colleagues.
My grandfather built his fortune through the trading business.
During the Warring States period, many warlords built castles on mountains.
築く is used for building up abstract things like relationships or reputations over time, while 形作る focuses more on the emergence of a shape or form.