Diction is the choice and use of words in speech or writing. One can describe diction by considering the following:

Words may be monosyllabic (one syllable in length) or polysyllabic (more than one syllable in length). The higher the ratio of polysyllabic words, the more difficult the content.

Words may be mainly colloquial (slang), informal (conversational), formal (literary), or old-fashion ed.

Words may be mainly denotative (containing an exact meaning), e.g. dress, or connotative (containing a suggested meaning), e.g. gown.

Words may be euphonious (pleasant sounding), e.g. butterfly, or cacophonous (harsh sounding), e.g., pus.