The Base Name of a template is also referred to as the Theme Hook. The Base Name of a template is used for determining thinks such as which preprocess function effects a template and which template files are used for theming components. See below for examples.
| TEMPLATE | HOOK |
|---|---|
| node.html.twig | node |
| page.html.twig | page |
| node--article.html.twig | node |
| field--body--1.html.twig | field |