Advantage of the vernacular name is
They can have opposite meanings in different countries
They can be corrected
They are universal in application
They are based on some characteristic of organisms.
Disadvantages of vernacular names
Vernacular names are not used by biologists because
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vernacular names are not universal in application, they cannot be corrected and can have opposite meanings in different countries. All these are disadvantages of vernacular names. Vernacular names being based on some characteristic of organisms, can be advantageous also.