A picture that holds this word together: things that were lying apart are now standing in one place, and you are looking at them as one. The things usually do not match — shells beside broken glass, farm tools from three centuries, bottle caps beside a broken clock — and that is part of the word. The -age ending lets the same word hold both the moment of drawing them together and the group that results.
From the word’s history
The packet records the word as borrowed from French assemblage, and by surface analysis as assemble plus -age. The -age ending commonly turns an action into a noun (as in package, storage), which is why the word can name both the act of putting together and the thing put together.
資料顯示這個字借自法文 assemblage，從構詞看則是 assemble 加上 -age。-age 這個字尾常把動作變成名詞，例如 package、storage。這正好說明了為什麼同一個字既能指「組裝這個動作」，也能指「組起來的那一批」。
Wiktionary etymology supplied in this packet: Borrowed from French assemblage; by surface analysis assemble + -age (source_ref kaikki:3f6f69a190036ae4:1272165274:13903)
登入就可以看每一支怎麼連回核心畫面。