In a transverse wave: - Oscillations are perpendicular to the direction of energy travelling - Frequency is the amount of complete waves passing a certain point in one second (measured in hertz, Hz) - Wavelength is the distance from any point on one wave to the same point on the following wave - The amplitude is the maximum displacement of the particles from their average position (and be measured from the horizontal mid-point of the wave to either the peak or trough)
There isn't always a defined relationship between these features. However, frequency × wavelength = velocity of the wave.