Synonyms of the word 
INCIDENCE → FREQUENCY
incidence
- n. The act of something happening; occurrence.
- n. The extent, or the relative frequency of something happening.
- n. (physics) The striking of radiation or a projectile upon a surface.
- n. (epidemiology) A measure of the risk that a person develops a new condition within a specified period…
frequency
- n. (uncountable) The rate of occurrence of anything; the relationship between incidence and time period.
- n. (uncountable) The property of occurring often rather than infrequently.
- n. (statistics) number of times an event occurred in an experiment (absolute frequency).
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