Nouns

All nouns in Spanish have a masculine or feminine gender, the intermediate gender does not exist.
Most of the nouns that end in -o are masculine, the nouns that end in -a, -ion, -d and -z, are feminine.

Exceptions:
la mano (the hand)	female gender
el camión (the truck)	male gender
el lápiz (pencil)	male gender
el guardia (guard)	male gender

Male gender, female -a:
el telegrama	the telegram
el idioma	the language
el mapa	the map

Plural of nouns

Plural nouns are formed by adding the letter -s to the end of the word that ends in a vowel, or -es if it ends in a consonant.
For example: el hombre - los hombres, la mujer - las mujeres

If the noun ends in -z, in the plural it is replaced by c and ends in -es
For example: lapiz - lapices, luz - luces, voz - voces

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