Pensation
Pensation is not a standard term in contemporary English. In most contexts it is encountered as either a misspelling of related words such as pension or compensation, or as an archaic or dialect form that does not have a widely recognized distinct meaning.
The closest established terms are pension and compensation. A pension typically refers to a regular payment
In current writing, if you encounter "pensation," it is advisable to determine the intended sense from context
See also: pension, compensation, remuneration, allowance, stipend.