The word 'thematically' is built upon the Greek noun thema, meaning 'something laid down' or a 'proposition'. This root passed into Latin as thema and entered English as 'theme', signifying a subject or topic. The adjectival suffix -ic was added to form 'thematic', meaning 'relating to themes'. Finally, the adverbial suffix -ally was appended, creating a word that describes an action performed in a manner connected to a central subject or underlying idea. The journey from a concrete concept of something physically set down to an abstract principle organizing artistic or intellectual work illustrates a classic pattern of semantic broadening.

Structure: themat (theme) + ic (adjective suffix) + ally (adverb suffix) - themat: From Greek themat- (stem of thema), meaning 'something set down, proposition, theme'. It functions as the core root denoting the subject or topic. - ic: A suffix of Greek and Latin origin used to form adjectives, meaning 'of, pertaining to, or having the nature of'. - ally: A suffix of Latin origin (via French -el + -ment) used to form adverbs from adjectives ending in -ic, meaning 'in a manner of'.