In the names "Canada Goose", "Long Island Shellfish" and "Dublin Bay Prawns", "Canada", "Long Island" and "Dublin Bay" are adjectives, because geese are not also "Canada", shellfish are not also "Long Island" and prawns are not also "Dublin Bay".

This kind of names is typical for English, but not for most other languages.

For instance, the scientific name of the Canada goose is "canadensis", which means "Canadian", not "Canada".

An adjective (in the broad sense) is a word that describes a subset of the set named by the noun to which it is attached.

While most languages also include distinct words that are adjectives in the narrow sense, i.e. which have degrees of comparison, adjectives in the broad sense (sometimes called relational adjectives) can be derived from any noun by various means, e.g. genitive case markers, prepositions, postpositions, suffixes, prefixes or accentual patterns, except for ambiguous languages like English, where any noun can also be used as an adjective, and sometimes also as a verb.