construction
To create something, such as a building, from smaller elements, such as blocks, or to create discrete categories from an otherwise unordered mixture.
Further examples:
Building an identity out of smaller elements, such as family, job, roles, hobbies, likes, etc.
Creating a word out of letters.
Constructing a book from sentences, paragraphs, and chapters.
Creating a vehicle requires: design elements, blueprints, raw materials, engineered parts, and labor.
God separated the waters below from the waters above with a firmament called "heaven". Then He separated the waters (which he called "seas") from the land.