With respect to compilation, the syntax analyzer takes the lexical units from the lexical analyzer and uses them to construct hierarchical structures called.

parse tree or parsing tree

Explanation:

A parse tree or parsing tree is an organized, rooted diagram representing a string's lexical framework in quite a reference-free language.

They are mainly used in computer language. Parse trees represent the input language context in practical terms, rendering them different from conceptual syntax trees used in programming.