What is meant by "all of them" in His Almighty saying: "And He taught Adam all the names" (Al-Baqarah 31), and what does Allah mean by the pronoun "then He presented them"?

Adam was taught the names of all things, their essences, attributes, and actions. The "names" here refer to the names of all creatures and what is named. Scholars have differed regarding what is meant by "names." Some said: the names of his descendants. Others said: the names of the angels. Some said: the names of the genera, not their species. Others said: the names of everything on earth. And it was also said: the names of everything, even a bowl. The majority opinion is that the names are the expressions, and what is meant are the names of the named things.