detected by the great majority of speakers, and so have become part and
parcel of their vocabulary on an equal footing with the legitimate words
of speech. They are called upon to do similar service as the ordinary
words used in everyday conversation--to express thoughts and desires and
convey meaning from one to another. In fact, in some cases, slang has
become so useful that it has far outstripped classic speech and made for
itself such a position in the vernacular that it would be very hard in
some cases to get along without it. Slang words have usurped the place of
regular words of language in very many instances and reign supreme in
their own strength and influence.

Cant and slang are often confused in the popular mind, yet they are not
synonymous, though very closely allied, and proceeding from a common
Gypsy origin. Cant is the language of a certain class--the peculiar
phraseology or dialect of a certain craft, trade or profession, and is
not readily understood save by the initiated of such craft, trade or
profession. It may be correct, according to the rules of grammar, but it
is not universal; it is confined to certain parts and localities and is
only intelligible to those for whom it is intended. In short, it is an
esoteric language which only the initiated can understand. The jargon, or
patter, of thieves is cant and it is only understood by thieves who have
been let into its significance; the initiated language of professional
gamblers is cant, and is only intelligible to gamblers.

On the other hand, slang, as it is nowadays, belongs to no particular class
but is scattered all over and gets _entre_ into every kind of society and
is understood by all where it passes current in everyday expression. Of
course, the nature of the slang, to a great extent, depends upon the
locality, as it chiefly is concerned with colloquialisms or words and
phrases common to a particular section. For instance, the slang of London