suffix
making; forming; cultivating; growing
Attaches to nouns to indicate the act of making, building, or growing something. Common in compounds like もの作り (manufacturing), 庭作り (gardening), or 人作り (character building).
日本のもの作りは世界に誇れる技術だ。
Japanese manufacturing is a technology we can be proud of in the world.
彼女は庭作りが趣味で、週末はいつも土いじりをしている。
Her hobby is gardening, and she is always working with soil on weekends.
suffix
Describes the shape, structure, or style of something, often used in compounds like 顔作り (facial features) or 体作り (physique).
この建物は西洋風の作りになっている。
This building is built in a Western style.
彼はがっしりした体作りをしている。
He has a sturdy build.
The non-rendaku form つくり is used as a standalone noun meaning 'make' or 'construction', while づくり is a suffix attached to other nouns.
Also a suffix meaning 'made in' or 'manufactured', but 製 is more formal and often used for products (e.g., 日本製 'made in Japan'), while 作り is more general and can refer to the process or style.
The suffix づくり is the rendaku form of つくり, the nominalized form of the verb 作る (to make). It attaches to nouns to form compounds indicating the act or style of making.