[11.English Vocabulary]
The exact number of English words is not known.
The large dictionaries have over half a million entries,
but many of these are compound words (schoolroom, sugarbowl)
or different derivatives of the same word,
and a good many are obsolete words to help us read older literature.
Dictionaries do not attempt to cover completely words
that we can draw on:
the informal vocabulary,
especially slang, localism,
the terms of various occupations and professions,
words used only occasionally by scientists and specialists in many fields,
foreign words borrowed for use in English,
or many new words or new senses of words
that come into use every year
and that may or may not be used long enough to warrant being included.
It would be conservative to say
that there are over a million English words
that any of us might meet in our listening and reading
and that we may draw on in our speaking and listening.
Professor Seashore concluded that first-graders enter school
with at least 24,000 words and add 5,000 each year
so that they leave high school with at least 80,000.
These figures are for recognition vocabulary,
the words we understand when we read or hear them.
Our active vocabulary,
the words we use in speaking and writing,
is considerably smaller.
You cannot always produce a word exactly when you want it.
But consciously using the word
you recognize in reading will help get them into your active vocabulary.
Occasionally in your reading pay particular attention to these words,
especially when the subject is one that you might well write or talk about.
Underline or make a list of words that you feel a need for
and look up the less familiar ones in a dictionary.
And then before very long find a way to use some of them.
Once you know how they are pronounced and what they stand for,
you can safely use them.