difference between "an economy" and "economy"

[Sultano]

could you shed some light on the difference between "an economy" and "economy" showing examples , please?
thanks

[Mister Micawber]

.
The difference is the same as in the countable and uncountable forms of many nouns.

Economy in writing is a good skill to develop.
His writing shows an admirable economy.
.
_________________
Native English teacher at Mister Micawber's