Prototype
Model
noun, の adjective
The original model of something isn't usually very good. It's rough. It's a prototype.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
へー、これがワニカニ人形の原型なんですか。
Oh, so this is the original prototype for the WaniKani doll.
この商品は、最初の原型から多くの改善が加えられて、今の形になったんです。
This product has undergone many improvements since the initial prototype to become the form it is today.
私たちはまず初めに、粘土で彫刻の原型を作るんです。
We usually sculpt a model out of clay at first.