Each day contains countless options, decisions, possibilities, of which only one can emerge.
If you count all the things in a group, you add them up in order to find how many there are.
I counted the money. It was more than five hundred pounds...
I counted 34 wild goats grazing...
Countless means very many.
There are countless small ski areas dotted about the province.
To emerge means to come out from an enclosed or dark space such as a room or a vehicle,
or from a position where you could not be seen.
Richard was waiting outside the door as she emerged...
The postman emerged from his van soaked to the skin. ...holes made by the emerging adult beetle.
* Each and Every. разница.