O-Voca: Pairs of Adjectives (Economic vs Economical)

adjective
adjective: economic
1.
relating to economics or the economy.
"the government's economic policy"
(of a subject) considered in relation to trade, industry, and the creation of wealth.
"economic history"
synonyms: financial, monetary, pecuniary, budgetary, fiscal, commercial, trade, mercantile
"the government's commitment to economic reform"
2.
justified in terms of profitability.
"many organizations must become larger if they are to remain economic"
synonyms: profitable, profit-making, moneymaking, money-spinning, lucrative, remunerative, financially rewarding, fruitful, gainful, productive;
antonyms: unprofitable
requiring fewer resources or costing less money.
"solar power may provide a more economic solution"
synonyms: cost-effective, effective, efficient, energy-efficient, fuel-efficient, energy-saving, fuel-saving, worthwhile, valuable, advantageous, cheap, inexpensive, low-cost, low-price, low-budget, budget, economy, reasonable, reasonably priced, cut-price
"rugs are a practical and economic alternative to wall-to-wall carpeting"
antonyms: extravagant

economical
 ec·o·nom·i·cal
/ˌekəˈnämik(ə)l,ˌēkəˈnämik(ə)l/
adjective
adjective: economical
giving good value or service in relation to the amount of money, time, or effort spent.
"a small, economical car"
synonyms: cheap, inexpensive, low-cost, low-price, low-budget, budget, economy, reasonable, reasonably priced, cut-price, cut-rate, discount, discounted, bargain, bargain-basement, cost-effective, effective, efficient, energy-efficient, fuel-efficient, energy-saving, fuel-saving
"it is a very economical little car"
antonyms: expensive
(of a person or lifestyle) careful not to waste money or resources.
synonyms: thrifty, careful (with money), provident, prudent, canny, sensible, frugal, sparing, scrimping, economizing, abstemious; forehanded
"my friend is a very economical shopper with a keen eye for a bargain"
antonyms: spendthrift
using no more of something than is necessary.
"this chassis is economical in metal and therefore light in weight"
Phrases
be economical with the truth — lie or deliberately withhold information.