frequency

Perioicity is likely misspelled.

Perioicity has no English definition.

As a noun frequency is

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

As nouns the difference between wave and frequency

is that wave is a moving disturbance in the level of a body of water; an undulation while frequency is the rate of occurrence of anything; the relationship between incidence and time period.

As a verb wave

is to move back and forth repeatedly.

As nouns the difference between probability and frequency

is that probability is the state of being probable; likelihood while frequency is the rate of occurrence of anything; the relationship between incidence and time period.

As an initialism BPM

is Beats Per Minute

As a noun frequency is

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

In statistics terms the difference between likelihood and frequency

is that likelihood is the probability that some fixed outcome was generated by a random distribution with a specific parameter while frequency is number of times an event occurred in an experiment (absolute frequency.

As nouns the difference between likelihood and frequency

is that likelihood is the probability of a specified outcome; the chance of something happening; probability; the state of being probable while frequency is the rate of occurrence of anything; the relationship between incidence and time period.

As a noun frequency

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

As an adverb frequently is

at frequent intervals.

As nouns the difference between taxonomy and frequency

is that taxonomy is the science or the technique used to make a classification while frequency is (uncountable) the rate of occurrence of anything; the relationship between incidence and time period.