If you want to learn to speak Spanish correctly it is essential to learn the gender of Spanish nouns. Every noun in Spanish is either masculine (el chico - the boy) or feminine (la chica - the girl). In some cases this is denoted by a change in ending as in the example given. However, not every noun that ends in 'a' is feminine. Many words of Greek or Latin origin, such as 'el sistema - system' are masculine. Similarly, words such as 'la radio - radio' are feminine even if they end in 'o'. It is easiest to learn Spanish gender as you learn each noun. However, there are a few rules that will make it easier: * Most nouns that end in 'o' are masculine' and most nouns that end in 'a' are feminine. * Nouns ending in -sión, -ción, -dad, -tad, -tud, -umbre are feminine. * Gender in Spanish is also shown by use of the definite article. This is 'el' for masculine nouns and 'la' for feminine nouns.