This document discusses syntactic relations and tree diagrams. It defines syntactic relations as functional relationships between constituents in clauses or phrases. A tree diagram provides a visual representation of constituents in an expression, arranged hierarchically like a family tree. Key terms for tree diagrams are discussed, including constituents, nodes, branches, and c-command. C-command refers to one constituent commanding or governing another. The importance of c-command is shown for anaphora, where a reflexive or reciprocal must be bound within its governing category. Examples are given to illustrate these concepts.