homonym (n.)

• antonym
• articulation
• copy
• ditto
• double
• duplicate
• equivalent
• expression
• facsimile
• homograph
• homophone
• lexeme
• locution
• logos
• metonym
• monosyllable
• polysyllable
• replica
• syllable
• synonym
• term
• twin
• usage
• utterance
• verbalism
• vocable
• word