alphabet alphabet /ˈælfəˌbɛt/

noun

1. The elementary stages of any subject (usually plural)  ( ABC , ABC's , ABCs , alphabet , first principles , rudiments )
   the elementary stages of any subject (usually plural)
    He mastered only the rudiments of geometry
   he mastered only the rudiments of geometry
   
2. A character set that includes letters and is used to write a language  ( alphabet )
   a character set that includes letters and is used to write a language
    The English alphabet consists of 26 letters, each with a unique sound.
   The English alphabet consists of 26 letters, each with a unique sound.