NOUNS
Nouns answer the questions "What is it?" and "Who is it?"
They give names to things, people and qualities.
Examples: dog, bicycle, man, girl, beauty, truth, world.
NOUN GENDER
In general there is no distinction between masculine, feminine and neuter in English nouns. However, gender is sometimes shown by different forms or different words.
Examples:
Different words:
Masculine Feminine
man
father
uncle
boy
husband
woman
mother
aunt
girl
wife

Different forms:

Masculine Feminine
actor
prince
hero
waiter
widower
actress
princess
heroine
waitress
widow
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FROM WIKIPEDIA:
Gender is assigned to animate objects based on biological gender (where known), and to personified objects based on social conventions (ships, for example, are often regarded as feminine in English). He is used for masculine nouns; she is used for feminine nouns
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IOU, what gender is SUN, based on your english ?