Physical is an adjective that means ‘having to do with the human body’. We talk about physical fitness or hard physical labor. The adjective fiscal, on the other hand, means ‘related to money’. You might read about a company that needs to increase sales to avoid a fiscal crisis.
Physical has to do with the material world of the body as well as bodily forces.
"His Dad is physically fit enough to play soccer."
Fiscal is a financial term relating to someone who has control to money and funds in the treasury of a company, country, region or city.
"The man with the red cap is the bank's fiscal manager."