They both have very different flavours, different usages and different leaf shapes.
Many Italian Seasoning will contain Oregano. You can substitute basil, but the flavor won't be the same. If you really dislike oregano play with another earthy, wood herb like Rosemary or Thyme.
You can use basil, thyme, or marjoram as substitutes for oregano in chili.
You can substitute oregano or thyme for marjoram in a recipe.
Oregano or thyme can be substituted for marjoram in a recipe.
You can substitute oregano or thyme for marjoram in your recipe.
You can substitute oregano or thyme for marjoram in this recipe.
paprika cumin cloves thyme parsley oregano
You can substitute parsley, oregano, thyme, or cilantro for basil in a recipe.
You can use oregano or thyme as a substitute for marjoram in soup.
You can substitute oregano, thyme, or basil for marjoram in your recipe.
You can use oregano or thyme as a substitute for marjoram in recipes.
Thyme is a herb, it has no ingredients as such except for the naturally absorbed chemicals. Thyme is its own plant, an herb used in baking similar to sage or oregano. It can usually be found dried and ground in the spice racks, and is an easy to grow plant if you have a bit of sun and good soil. Thyme is actually pronounced the same as 'time', kind of interesting.