frequency

In uncountable terms the difference between frequency and proportion

is that frequency is the property of occurring often rather than infrequently while proportion is harmonious relation of parts to each other or to the whole.

In countable terms the difference between frequency and proportion

is that frequency is the quotient of the number of times $n$ a periodic phenomenon occurs over the time $t$ in which it occurs: $f\; =\; n\; /\; t$ while proportion is proper or equal share.

As a verb proportion is

to set or render in proportion.

As nouns the difference between frequency and urgency

is that frequency is the rate of occurrence of anything; the relationship between incidence and time period while urgency is the quality or condition of being urgent; insistence; pressure; as, the urgency of a demand or an occasion.

As an adjective prominent

is standing out, or projecting; jutting; protuberant.

As a noun frequency is

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

As nouns the difference between vibration and frequency

is that vibration is the act of vibrating or the condition of being vibrated while frequency is the rate of occurrence of anything; the relationship between incidence and time period.

As nouns the difference between frequency and recurrence

is that frequency is the rate of occurrence of anything; the relationship between incidence and time period while recurrence is return or reversion to a certain state.

As a verb much

is .

As a noun frequency is

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

As nouns the difference between surge and frequency

is that surge is a sudden transient rush, flood or increase while frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period.

As a verb surge

is (lb) to rush, flood, or increase suddenly.

As a noun frequency is

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

As nouns the difference between frequency and band

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