It's a matter of taste. Arabica beans are less bitter than Robusta beans and are considered to make the best coffee.
You might also consider Kona Pure (not the blend), grown in Hawaii and quite different. Or perhaps what's arguably considered the best coffee, Jamaica Blue Mountain, grown only in Jamaica, and outrageous in cost.
Coffee and espresso are two separate drinks, though the words are often used as synonyms. Espresso beans are specific types of coffee beans, and the espresso they make is thicker than coffee.
...coffee?
By selecting the right coffee beans
yes
If it's called coffee, then it's made from coffee beans.
Yes
Coffee/coffee beans
Coffee can be described as a beverage that consists of an infusion of ground coffee beans. Coffee can also be described as a seed of the coffee tree that is ground to make coffee.
No, once beans are ground and used to make coffee, they can not be used to make coffee again. However the grounds can be included in the making of compost or as a substrate for growing edible funguses. So they can be reused in a way.
Coffee plants are grown and the beans are harvested and then roasted. The roasted beans can then be ground up and steeped in hot water to make coffee. Coffee is grown in many warm countries. It originated in Arabia.
There are about 75 tablespoons in one pound of coffee.
Unfortunately, no, there are no widely-known coffee beans native to Ireland. Coffee requires a much different environment and climate. While coffee can be grown in Irish greenhouses, that doesn't make them native to the place.