Question

what is the derived name of tin and lead

Answer 1

Tin- Stannum
Lead- Plumbum

Answer 2

Tin was originally known as plumbum candidum or white lead in Latin.
Chemical symbol : Sn (derived from Latin name, stannum)

Lead was originally derived from the Celtic word 'luaide' meaning reddish, because of the colour of red lead, or lead tetroxide. Plumbism is the medical term for lead poisoning.
Chemical symbol : Pb (derived from Latin name, plumbum)