thematic >> θɪˈmatɪk
Definition: [adjective] having or relating to subjects or a particular subject.
Example: the book is organized into nine thematic chapters
Definition: [adjective] relating to or denoting the theme of a sentence.
Example: some languages use special affixes to mark thematic and non-thematic elements
Definition: [noun] a body of topics for study or discussion.
Example: I soon gave up trying to prime him with the thematics of the piece
Definition: [noun] a postage stamp forming part of a set with designs connected with the same subject.