Corpus
Etymology
Latin "corpus" simply meant body. It broadened to any organized body — a corpus of law, of texts, of an author’s work — and seeds "corporal," "corporate," "corpse," and "corpuscle."
noun · /KOR-puss/
A complete body of written or collected material treated as a single whole.
What it names
It lets you name the entire output — of an author, a field, a language — as one thing you can study.
Example
Linguists trained the model on a corpus of a billion words to capture how people actually write.
Related idea
The same "body" as in habeas corpus, "you shall have the body"; a writer’s corpus is the body of everything they produced.