What does the word generation mean?

In genealogy, the word generation means the offspring of a certain parent or couple. Thus the members of a "second generation" would be the grandchildren of that parent or couple, regardless of their age. Because childbearing can last a long time, it is possible for a niece or nephew to be the same age as an aunt or uncle, or even older than the aunt or uncle. This makes tracking generations potential confusing. Nevertheless it is sometimes convenient in genealogy to count generations. For this purpose 20-30 years is sometimes considered to be "one generation," taken as the average time between the birth of parents and the birth of their offspring
In genealogy, the word generation means the offspring of a certain parent or couple. Thus the members of a "second generation" would be the grandchildren of that parent or couple, regardless of their age. Because childbearing can last a long time, it is possible for a niece or nephew to be the same age as an aunt or uncle, or even older than the aunt or uncle. This makes tracking generations potential confusing. Nevertheless it is sometimes convenient in genealogy to count generations. For this purpose 20-30 years is sometimes considered to be "one generation," taken as the average time between the birth of parents and the birth of their offspring