language, speech (means of communication)
speech (ability to communicate)
speech (manner of communication)
word (act of speaking or writing about a specific topic)
speech (a formal session of speaking, especially a long oral message given publicly by one person) (oration, session of speaking)
language (method of interhuman communication)
language (expression of thought (the communication of meaning) in a specified way)
pronunciation (manner of articulation)

word (an affirmative reply; yes; certainly)

word! (truth, indeed, that is the truth!)