What is "co-occurrence"

alt. 1 (context uncountable English) The fact of a thing occurring simultaneously with something else; correlation. 2 (context countable English) An instance of a thing occurring simultaneously with something else; co-incidence. n. 1 (context uncountable English) The fact of a thing occurring simultaneously with something else; correlation. 2 (context countable English) An instance of a thing occurring simultaneously with something else; co-incidence.

1. n. an event or situation that happens at the same time as or in connection with another [syn: accompaniment, concomitant]

2. the temporal property of two things happening at the same time; "the interval determining the coincidence gate is adjustable" [syn: concurrence, coincidence, conjunction]

Co-occurrence or cooccurrence is a linguistics term that can either mean concurrence / coincidence or, in a more specific sense, the above-chance frequent occurrence of two terms from a text corpus alongside each other in a certain order. Co-occurrence in this linguistic sense can be interpreted as an indicator of semantic proximity or an idiomatic expression. In contrast to collocation, co-occurrence assumes interdependency of the two terms. A co-occurrence restriction is identified when linguistic elements never occur together. Analysis of these restrictions can lead to discoveries about the structure and development of a language.