There are various synonyms that we can use for the term "pension fund," which is a type of investment fund that collects money from employees and employers for future pension benefits. Some popular synonyms for pension fund include retirement fund, superannuation fund, provident fund, welfare fund, and retirement account. These names signify the same purpose and objective which is to provide financial support to an individual when they retire. While some may have slight differences in their technical aspects, all serve the same purpose of maintaining financial stability in the old age. Regardless of the terminology, a pension fund remains a critical financial vehicle for ensuring a stable and comfortable retirement.