Extension of a point refers to a line! Hope that helps!
B. HYPERBOLE is a figure of speech using an exaggeration to emphasize a point.
Malapropism is defined as the use of an incorrect word that is used to replace a word with the similar sound resulting in a nonsensical utterance which is often humorous.
Imagery is the use of visually descriptive language as a figure of speech in a literary work.
Semitone: the tone at a half step
Tone: .
a musical or vocal sound with reference to its pitch, quality, and strength.