The source presents a series of contrasted rhetorical stations. The objective is not merely to memorize terms, but to appreciate that one form is not equally appropriate in every situation.
StationContrasting station
DefinitenessIndefiniteness
Unrestricted statementQualification
FrontingPostponement
Explicit mentionOmission
SeparationConnection
BrevityAmplification and proportional expression
For each pair, ask why the form is chosen. Both may be linguistically permissible; the rhetorical issue is which fits the occasion.