Semantic vocabulary

Layer 2 of the programming layers. One question: what does this word denote here?

It is the layer most often skipped, because every word in the request already looks like it has a meaning. That is exactly the problem. customer means the billing contact in one module and the parent account in another, and both programs are correct. Nobody is wrong, nothing throws, and the two disagree for a year.

A vocabulary is not a glossary. A glossary explains jargon to newcomers. A vocabulary is the artifact the next layer is derived from: an entity term becomes a type, an act term becomes an operation, and a quantity term becomes the number in a rule.

A term