frequency

As a noun frequency

is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period.

As an adjective equifrequent is

of the same frequency.

As nouns the difference between frequency and superharmonic

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while superharmonic is (physics) a wave whose frequency is an integer multiple of that of another; an overtone.

As nouns the difference between frequency and lightshift

is that frequency is the rate of occurrence of anything; the relationship between incidence and time period while lightshift is the change in the energy (and thus frequency) of light upon interaction with matter.

As nouns the difference between frequency and gyrosonics

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while gyrosonics is a form of audio binaural stimulus that produces rotational perceptions of sound movement in the head at a particular predetermined frequency.

As nouns the difference between frequency and filtergram

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while filtergram is (astronomy) a photograph of the sun at a particular frequency range (by means of a variable filter).

As nouns the difference between frequency and gyrofrequency

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while gyrofrequency is (physics) the frequency of the circular motion of a charged particle in the presence of a uniform magnetic field.

As nouns the difference between frequency and subharmonic

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while subharmonic is such a frequency.

As an adjective subharmonic is

(physics) having a frequency that is a fraction of a fundamental frequency.

As a noun frequency

is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period.

As an adjective isofrequency is

describing points or systems having the same frequency.

As a noun frequency

is the rate of occurrence of anything; the relationship between incidence and time period.

As a verb undersample is

to take insufficient samples when sampling.

As nouns the difference between frequency and melograph

is that frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period while melograph is a device designed for analysing and plotting the frequency characteristics of ethnic music.