frequency (n.)

• amplitude
• antinode
• crest
• diffraction
• fluctuation
• fundamental
• harmonic
• hertz
• interference
• intonation
• kilohertz
• libration
• light
• megahertz
• monotone
• monotony
• node
• nutation
• oscillation
• overtone
• partial
• period
• periodicity
• pitch
• ray
• reinforcement
• resonance
• spectrum
• tone
• trough
• vacillation
• vibrancy
• vibration
• wave
• wavelength
• wavering