rhetoric vs expressive style

rhetoric and expressive style both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhetoric	Yes	No	No	No
expressive style	Yes	No	No	No

As nouns, expressive style is a hypernym of rhetoric; that is, expressive style is a word with a broader meaning than rhetoric:

rhetoric: using language effectively to please or persuade
expressive style: a way of expressing something (in language or art or music etc.) that is characteristic of a particular person or group of people or period

Other hypernyms of rhetoric include style.

As nouns, expressive style is a hypernym of rhetoric; that is, expressive style is a word with a broader meaning than rhetoric:

rhetoric: high-flown style; excessive use of verbal ornamentation
expressive style: a way of expressing something (in language or art or music etc.) that is characteristic of a particular person or group of people or period

Other hypernyms of rhetoric include style.

rhetoric (noun)	expressive style (noun)
study of the technique and rules for using language effectively (especially in public speaking)	a way of expressing something (in language or art or music etc.) that is characteristic of a particular person or group of people or period
using language effectively to please or persuade
high-flown style; excessive use of verbal ornamentation
loud and confused and empty talk