Instead of smoking the leaves, many people put extracts into foods. e.g. marijuana brownies. Hadn't heard of patches, but I would think it's just like nicotine patches but with THC instead.

edibles are, well, things you eat that have been infused - typically baked goods, but there's a pretty broad spectrum. i once went to a thanksgiving where everything, including the turkey, was infused with cannabis oil.

patch i'm not familiar with, i guess there is some kind of patch. sounds boring.