A pensioner is a person who receives a pension, most commonly because of retirement from the workforce. This is a term typically used in the United Kingdom, Ireland and Australia where someone of pensionable age may also be referred to as an 'old age pensioner'.

What is the meaning of Superannuitant?

: a recipient of a superannuation.

What is a supernumerary person?

noun, plural su·per·nu·mer·ar·ies. a supernumerary or extra person or thing. a supernumerary official or employee. a person who appears in a play or film without speaking lines or as part of a crowd; walk-on; extra.