periphrasis vs circumlocution

periphrasis and circumlocution both are nouns.

Word	Noun	Adjective	Verb	Adverb
periphrasis	Yes	No	No	No
circumlocution	Yes	No	No	No

As nouns, periphrasis and circumlocution are synonyms defined as:

periphrasis and circumlocution: a style that involves indirect ways of expressing things

Other synonyms of periphrasis include ambage.

periphrasis (noun)	circumlocution (noun)
a style that involves indirect ways of expressing things	a style that involves indirect ways of expressing things
	an indirect way of expressing something