One term for it is "Centro comercial."
A commercial ad is 'comercial' while the adjective commercial may also be 'mercantil' (mercantile).
Café Comercial was created in 1887.
Comercial Mexicana was created in 1930.
Rádio Comercial was created in 1930.
The population of Banco Comercial Português is 2,010.
Banco Comercial Português was created in 1985.
"Comercial" is the same as "commercial" if you are using the word in Spanish or Portuguese. If you are writing in English it means you cannot spell.
Comercial Aguas Verdes was created on 1971-03-21.
Banco Comercial do Atlântico was created on 1993-09-01.
Sociedad Comercial del Plata was created in 1927.
Comercial Atlético Clube was created on 1945-04-21.