The best-known taxonomic ranks are, in order: life, domain, kingdom, phylum, class, order, family, genus, and species. This assignment to a genus is not immutable; later a different (or the same) taxonomist may assign it to a different genus, in which case the name will also change.ristotle used the words genus and species to mean generic and specific categories. Aristotle and other pre-Darwinian scientists took the species to be distinct and unchanging, with an  essence , like the chemical elements.
The noun EURO has 1 sense: 1. the basic monetary unit of most members of the European Union (introduced in 1999); in 2002 twelve European nations (Germany, France, Belgium, Luxembourg, the Netherlands, Italy, Spain, Portugal, Ireland, Greece, Austria, Finland) adopted the euro as their basic unit of money and abandoned their traditional currencies Familiarity information: EURO used as a noun is very rare.
When you travel to Europe, you will need to exchange your money to receive Euros. Euros are the form of currency used in much of Europe. There are multiple ways to exchange money in Europe and each way comes with it's advantages and disadvantages. Examples include exchanging money at a local bank, withdrawing money with your ATM card from an ATM, or exchanging your money at a currency exchange booth. It is a good idea to plan ahead and compare exchange rates before exchanging your money in Europe.