Because you are using un coca, your phrase means "a coca plant." Un Coca means "a Coke," and une coca means "cocaine."
"J'ai un" in French translates to "I have a" in English.
dans un village means 'in a village' in French.
Un cadeau translates to a gift in English.
You can say "c'est un but" to mean "it's a goal" in French.
Un sapin (masc.) is a fir (tree) in French.
Coca is called the same in French: un coca (masc.).
A Coca-Cola
Un coca-cola is masculine.
un four is an oven in French
"un bus" is a bus in French.
un sac is a bag in French.
un survêtement is a tracksuit in French.
un crâne is a skull in French.
"un crayon" (masc.) is a pencil in French.
"J'ai un" in French translates to "I have a" in English.
un serpent is a snake in French.
un poussin is the name for the chicklet in French.