# Is-A Test

> A technique for deciding concern membership by asking whether a file is-a the proposed word, admitting it as a role when it is and as a domain noun when the system merely has-a it.

Record: `lexicon:is-a-test`
Kind: technique
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-is-a-test

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Container-by-Container Reshape](https://banes-lab.com/records/lexicon/container-by-container-reshape.md) and before [Rejection Table](https://banes-lab.com/records/lexicon/rejection-table.md).

## Category

- [Taxonomy / Classification / Naming](https://banes-lab.com/records/lexicon-category/taxonomy-classification-naming.md)

## Required by

- [Agnostic-First Vocabulary](https://banes-lab.com/records/architecture/agnostic-first-vocabulary.md)

## Linked from

- [Taxonomy / Classification / Naming](https://banes-lab.com/ontology/principles/architecture-category-taxonomy-classification-naming.md)