economic

As adjectives the difference between efficient and economic

is that efficient is efficient while economic is economic.

As a noun fiance

is .

As a verb fiance

is (obsolete) to betroth; to affiance.

As an adjective economic is

economic.

As adjectives the difference between valuable and economic

is that valuable is having a great value while economic is economic.

As a noun valuable

is a personal possession such as jewellery, of relatively great monetary value; — usually used in plural form.

As an adjective economic

is economic.

As a verb save is

to know.

As an adjective economic

is economic.

As a noun organization is

(uncountable) the quality of being organized.

As an adjective economic

is economic.

As a noun product is

a commodity offered for sale.

As an adjective economic

is economic.

As a noun contrast is

(label) a difference in lightness, brightness and/or hue between two colours that makes them more or less distinguishable.

As a verb contrast is

to set in opposition in order to show the difference or differences between.

As an adjective economic

is economic.

As a noun difference is

difference.

As adjectives the difference between economic and scientific

is that economic is economic while scientific is of, or having to do with science.

As an adjective economic

is pertaining to an economy.

As a noun ecosystem is

a system formed by an ecological community and its environment that functions as a unit.