former
/ˈfɔːrmər/
Adjective
1
Belonging to or occurring in the past; previous or earlier.
She met her former teacher at the reunion.
2
Being the first of two people or things mentioned (as opposed to the latter).
Of the two options, I prefer the former.
Noun
1
A person or thing that forms or shapes something.
The machine acts as a former to shape the metal sheets.