vocabulary profiling

We already know that especially inm English a word can hold a thousand meaning in the context we want to use it, for example, taking the basic word 'book'-I can both use its first meaning in dictionary-'I am reading a book' or for the context I am using I can use second or third meaning-'I booked our honeymoon in France', the meanings of the words in English show a flexible nature in terms of contexts we want to put them in

I'm quiet satisfied with the knowledge I acquired for the lexis of English for the moment but I may have a question for word frequencies in english language-Do the word usage or its frequency change from person to person, if so how can we make definite generalization about frequency of words?

The vocabulary profile's main intention, in my point of view, is to show the readers or students the most stressed and continuous use of words in a text, 'vocabulary profiler is like a 'prism' for lexis' statement can be through, because of the coloring and font size the 'word cloud' provide to us we can see with naked eye which word to focus on in a particular reading.

I don't quiet think so, lets think this way, in a reading that concentrate on education the word 'teach' or 'learning' are mostly stressed words however if we take these two concept to the field of science we could assume that the word 'teach' would fade away compared to sceince related things, though 'learning' can still maintain its emphasis point