【Sparing】 ,  【frugal】 ,  【thrifty】 ,  【economical】  can all mean exercising or manifesting careful and unwasteful use of one’s money, goods, and resources.

【Sparing】 connotes abstention or restraint.

【Frugal】 suggests the absence of all luxury and lavishness especially in food and ways of living and dress; positively it implies simplicity, temperance, and, often, content.

【Thrifty】 implies industry, good management, and prosperity as well as frugality.

【Economical】  often is used interchangeably with  【thrifty】 when the 【sparing】 use of money and goods is emphasized. However the word often implies more than saving, for its chief implication is prudent management or use to the best advantage, without waste, and it is therefore far more widely applicable than  【thrifty】 , which refers only to persons or their expenditures.