Hi ! we use "Son" for male person or object and "Sa" for female, for exemple : Un cheval --> masculin/male so the sentence will be : Une femme et son cheval. Une voiture --> féminin/female so it will be : Une femme et sa voiture In french we write "femme" but we spell as fAmme ! ;)

I'd just like to add that masculine adjectives mon/ton/son (mine/yours/his) are used with feminine nouns too if they begin with a vowel. So, for example, you will say mon in front of both ami and amie. mon ami = my male friend mon amie = my female friend

Thanks to both of you. I thought it was so. So I have to learn by heart every words gender.