occurrence

As nouns the difference between occurrence and observation

is that occurrence is actual instance where a situation arises while observation is the act of observing, and the fact of being observed.

As nouns the difference between occurrence and duplicate

is that occurrence is actual instance where a situation arises while duplicate is one that resembles or corresponds to another; an identical copy.

As an adjective duplicate is

being the same as another; identical this may exclude the first identical item in a series, but usage is inconsistent.

As a verb duplicate is

to make a copy of.

As nouns the difference between occurrence and null

is that occurrence is actual instance where a situation arises while null is zero, nil; the cardinal number before einn.

As nouns the difference between occurrence and occurrent

is that occurrence is actual instance where a situation arises while occurrent is an event, something that occurs.

As an adjective occurrent is

current, actual, occurring.

As a noun occurrence

is actual instance where a situation arises.

As a verb happened is

(happen).

As nouns the difference between prevalence and occurrence

is that prevalence is the quality or condition of being prevalent; wide extension while occurrence is actual instance where a situation arises.

As a noun occurrence

is actual instance where a situation arises.

As a verb appear is

to come or be in sight; to be in view; to become visible.

As nouns the difference between occurrence and appearing

is that occurrence is actual instance where a situation arises while appearing is appearance; act of coming into view.

As a verb appearing is

.

As nouns the difference between series and occurrence

is that series is a number of things that follow on one after the other or are connected one after the other while occurrence is actual instance where a situation arises.

As an adjective series

is connected one after the other in a circuit.

As nouns the difference between realization and occurrence

is that realization is the act of realizing; an act of figuring out or becoming aware while occurrence is actual instance where a situation arises.