The basic vocabulary and the stylistically marked strata of the vocabulary do not exist independently but are closely interrelated. Most stylistically marked words have their neutral counterparts in the basic vocabulary. (Terms are an exception in this respect.) On the other hand, colloquialisms may have their counterparts among learned words, most slang has counterparts both among colloquialisms and learned words. Archaisms, naturally, have their modern equivalents at least in some of the other groups.
The table gives some examples of such synonyms belonging to different stylistic strata.
start, get started
go on, get on
finish, be through, be over
kid, brat, beam (dial.)
infant, babe (poet.)
In teaching a foreign language, the basic vocabulary words comprise the first and absolutely essential part of the students' functional and recognition vocabularies. They constitute the beginner's vocabulary. Yet, to restrict the student to the basic vocabulary would mean to deprive his speech of colour, expressive force and emotive shades, for, if basic vocabulary words are absolutely necessary, they also decidedly lack something: they are not at all the kind of words to tempt a writer or a poet. Actually, if the language had none other but basic vocabulary words, fiction would be hardly readable, and poetry simply non-existent.