cumin or omit it
No you can't. Fresh coriander is when you use the leaves and ground coriander uses the seed of the plant. Their flavour is quite different from each other.
6 grams of coriander seeds =how mady grams of coriander powder
They are not equivalent. Ground coriander is the seed whereas fresh coriander is the leaf of the plant. They are different flavors and cannot be substituted.
Coriander
One teaspoon coriander seeds equals one teaspoon ground coriander. http://www.greenearthinstitute.org/recipes/coriander_seed/about_coriander_coriandrum_sativum.html
If the recipe calls for coriander seeds, cumin and caraway seeds are good substitutes. If the leaves of coriander is what is required for the recipe, this is also known as cilantro. In this case, fresh parsley can be used as a substitute.
Not if you want it to taste the same! The leaf of the same plant is cilantro.
2 grams
Maybe coriandor?
1 teas
Coriander is a herb. We can use all of it. Seeds are suitabe for storing, the bottom part (roots) is mostly used in Asia. Leafs can be used to, but in our country, we use mostly seeds:)
nothing. cumin is irreplaceable