Generally wine is only made from grape juice, processed, and matured in barrels. Some fruit wines are made but will be labellled as such, but these are not especially common.
Wine characteristics are often described using 'fruit' terms, such as berry, blackcurrant, plum, cherry flavours for red wine, and passionfruit, melon, peach etc for white wine, but that is simply comparing the taste and aroma to other things that is is reminiscent of. It does not contain them!
No. Wine is a complex mixture. Some of the flavor comes directly from the grapes; different varieties have different flavors. Some is the result of the weather and the soil where the grapes were grown (terroir). Yet another factor is the yeast used. Finally, the techniques used in making the wine affect the flavor. That's why wine can be sooooo good.