What's the difference between american and doubloon?

American

Definition:

(a.) Of or pertaining to America; as, the American continent: American Indians.
(a.) Of or pertaining to the United States.
(n.) A native of America; -- originally applied to the aboriginal inhabitants, but now applied to the descendants of Europeans born in America, and especially to the citizens of the United States.

Example Sentences:

(1) This study was undertaken to determine whether the survival of Hispanic patients with squamous cell carcinoma of the head and neck was different from that of Anglo-American patients.
(2) For some time now, public opinion polls have revealed Americans' strong preference to live in comparatively small cities, towns, and rural areas rather than in large cities.
(3) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(4) Recently, the validity of the American Thoracic Society (ATS) standards for selection of spirometric test results has been questioned based on the finding of inverse dependence of FEV1 on effort.
(5) I want to be clear; the American forces that have been deployed to Iraq do not and will not have a combat mission,” said Obama in a speech to troops at US Central Command headquarters in Florida.
(6) The prevalence of 24.4% among Mexican American men was similar to that among men from other ethnic backgrounds.
(7) The correlates of three characteristics of familial networks (i.e., residential proximity, family affection, and family contact) were examined among a national sample of older Black Americans.
(8) Senator Bernie Sanders of Vermont, who is also seeking the Democratic presidential nomination, recently proposed a bill that would ease the financial burden of prescription drugs on elderly Americans by allowing Medicare, the national social health insurance program, to negotiate with the pharmaceutical companies to keep prices down.
(9) The thermoregulatory responses of this American marsupial were, in most aspects, similar to those of Australian marsupials.
(10) Twelve patients with South American mococutaneous leishmaniasis who attended the Hospital Amazonico in Peru between February and September 1974 were treated with amphotericin B.
(11) Former Regional director for Latin American Caribbean and Middle East, Save the Children.
(12) The high frequency of increased PCV number in San, S.A. Negroes and American Negroes is in keeping with the view that the Khoisan peoples (here represented by the San), the Southern African Negroes and the African ancestors of American Blacks sprang from a common proto-negriform stock.
(13) The Pan American Health Organization, the Americas arm of the World Health Organization, estimated the deaths from Tuesday's magnitude 7 quake at between 50,000 and 100,000, but said that was a "huge guess".
(14) African Americans also have more outpatient episodes than whites.
(15) As a Native American I am pretty sensitive to charges of racism and white supremacy,” the Oklahoma congressman added.
(16) The prevalence of diabetes was 36% higher among San Antonio Mexican Americans than among Mexicans in Mexico City; this difference was highly statistically significant (age- and sex-adjusted prevalence ratio 1.36, P = 0.006).
(17) Responding to the 8 vignettes, 30 American and 32 Australian nurses took part in the study.
(18) A case-control study of breast cancer among Black American women was conducted in seven hospitals in New York City from 1969 to 1975.
(19) Join a Twitter book club It all started last summer, when 12,000 people took to Twitter to discuss Neil Gaiman's American Gods .
(20) All F. tularensis strains were found to have enzymatic activity irrespective of their subspecies, but neuraminidase activity was higher in the strains belonging to the American subspecies.