Because you are using un coca, your phrase means "a coca plant." Un Coca means "a Coke," and une coca means "cocaine."
un fantôme is a ghost in English.
Coca is called the same in French: un coca (masc.).
un chapeau (masc.) is a hat in English.
Un fils (masc.) is a son in English.
Un chapeau (masc.) is 'a hat' in English.
'un renne' is called a reindeer in English.
Un sac (masc.) means a bag in English.
un tabier doesn't mean anything, un tablier means un apron
un mois - a month
un compas is 'a compass' in English.
un pyjama: pajama