If the pot is tall, it is probably a coffee pot. Teapots are rounded and short, while coffee pots are more narrow and taller than teapots. Some tall ceramic or pottery pots were made for chocolate. The chocolate pots have short spouts near the top and are a bit shorter than coffee pots.
Real Italian pottery usually shows an unglazed bottom, usually of a terra cotta color. You can see brush strokes in authentic pieces.
To identify your set, try one of these sources:
"Italian Pottery Marks From Cantagalli to Fornasetti" by Walter and Karen Del Pellegrino.
You can also look at the Kovel's or Miller's book suggested in the article.