帮忙翻译corporate business, and executive business

corporate business :译为集团业务,属于大型企业；
executive business 与corporate business意思类似,但在英语里很少用到此说法.
另：corpoarate一般含有高层的、集团的、高级的等等的含义,例如：集团总监或财务高级总监等（CEO,CFO)的办公室一般为corporate office;而分公司的办公室则一般为：General manager office,HR department office,production office.,etc