What's the difference between purchaser and subpurchaser?

Purchaser

Definition:

(n.) One who purchases; one who acquires property for a consideration, generally of money; a buyer; a vendee.
(n.) One who acquires an estate in lands by his own act or agreement, or who takes or obtains an estate by any means other than by descent or inheritance.

Example Sentences:

(1) Britain had been negotiating with the Saudis over the purchase from British Aerospace of dozens of Hawk and Tornado fighter aircraft.
(2) The Sports Network broadcasts live NHL, Nascar, golf and horse racing – having also recently purchased the rights for Formula One – and will show 154 of the 196 games that NBC will cover.
(3) This study sought to determine if and why barriers to the over-the-counter purchase of syringes in the St. Louis metropolitan area might exist, given that no ordinance prohibits such a sale there.
(4) The government’s increase in the discount offered to tenants has prompted a massive increase in purchases of local authority accommodation.
(5) Following baseline, training consisted of teaching students to use a number line to make purchases.
(6) In the first experiment, mongrel and ddS mice produced under an unsatisfactory control of proximate environment were purchased, and acute toxicity tests of thiamine hydrochloride (B1HCl) and isonicotinic acid hydrazide (INAH) were practiced at two different conditioned rooms.
(7) Our fundamental market is 75% done,” he said last weekend, “and when we sign one midfield player that crucial work will be done.” The manager did not rule out further purchases, though.
(8) After a brief review of the range of monitoring accessories, the author considers the problem of their hospital standardization (various needs of the different hospital units, diversity of the monitors, existence of central purchasing departments, pressure from the treasurer's office).
(9) As well as stocking second-hand items for purchase, charity shops such as Oxfam have launched Christmas gifts to provide specific help for poor communities abroad.
(10) Like many young Chinese, Hua often made purchases on Taobao, the country’s equivalent of eBay.
(11) Howard Archer of consultancy IHS Global Insight said: "Given the dominant role of the services sector in the economy, the steady growth in May reported by the purchasing managers is welcome news and supports hopes that it can avoid further contraction in the second quarter."
(12) The CML said the value of lending for house purchases was up by 8% year on year in May, at £9.4bn, while the number of loans grew by 5% to 53,800.
(13) Tesco uniforms can be bought through the supermarket's Clubcard Boost scheme, where £5 in Clubcard vouchers equals a £10 spend on clothing, while Asda is offering free delivery on uniform purchases of over £25.
(14) It's possible to go out and about, and not talk to anybody apart from the person you purchase goods from."
(15) The company is also making its VR games collection free to all purchasers of its headset.
(16) The FSA last month published a report by Professor Gerard Hastings which concluded that advertising to children does have an effect on their food preferences, purchasing behaviour and consumption, and that these effects occur not just at brand level, but also for different types of food.
(17) That would mark a controversial break from its existing policy, whereby the ECB offsets bond purchases by draining liquidity from the system in separate operations.
(18) The news website is run by journalist Carmen Aristegui, who in 2014 reported that Peña Nieto’s wife was purchasing a house with financing from a government contractor .
(19) For example, if we purchase new examination equipment without any consideration or if we decide what type of equipment to introduce according to the common advice of the purchase committee of the hospital or the medical school, then we cannot design an ideal system of laboratory examinations and are forced to invest a large sum of money in vain.
(20) The euro clawed back some losses after the European Central Bank said it would absorb €16.5bn from the money markets to compensate for bond purchases up to 14 May, and Greece said it would receive the first tranche of emergency loans tomorrow.