For the less adventuresome, the table below suggests individual seasonings for a variety of foods. You will need to experiment to see which appeal to you and your family. Green Beans -- Dill, marjoram ...
A better substitute for oregano is marjoram, which is essentially just a milder version of the same flavor profile. Whatever ...
Buy fresh marjoram from supermarkets and garden centres. Dried marjoram, used sparingly, is an acceptable substitute for fresh. Marjoram is popular in Mediterranean and North American cookery.