All of these terms are devices that can describe something that is superfluous but how do these terms differ?
ma-cro-lo'-gi-a from Gk. macro, "long" and logos, "speaking"
Longwindedness. Using more words than are necessary in an attempt to appear eloquent.
pe-ri-er'-gi-a from Gk. peri, "exceedingly" and ergon, "work"
over labour, curious
Overuse of words or figures of speech. As such, it may simply be considered synonymous with macrologia. However, as Puttenham's term suggests, periergia may differ from simple superfluity in that the language appears over-labored.
Exaggeration done in a self-aggrandizing manner, as a braggart.
Is all of this correct? Can anyone give a more detailed description of how these three terms differ?