Greek philosopher, Heraclitus of Ephesus, once said, “It is impossible for a man to step into the same river twice”. What he meant was that when a man steps into (the) river the second time, it would not be the same water and he would not be the same man – changes would have already taken place.
English language, like many other things, undergoes changes every now and then. English has changed so much since the time Bishop Robert Lowth wrote what is regarded the first publication on the rules of the English language, A Short Introduction to English Grammar, in 1762; since when Oxford University Press, in particular two brothers Henry and Frank Fowler, and Charles Talbut Onion, came up with the first volume of A New English Dictionary on Historical Principles in 1888; and from the time when the (named) brothers again published a manual, The King’s English, in 1906. Today, for example, words such as “google” and “tweeter” have found its way into the English language and are both used as “verbs” and “nouns”.