Yes... Toast means to cook lightly , so the outside becomes slightly cooked (煻?) . We usually only use this for bread, and that bread is also called "toast"! Roast is like 烤.

Toast is used to mean "to brown, as bread or cheese, by exposure to heat". It is only slight cooking just enough to brown the outside. (such a bread is also called toast) Roast means : 1. to bake (meat or other food) uncovered, especially in an oven. 2. to cook (meat or other food) by direct exposure to dry heat, as on a spit. 3. to brown, dry, or parch by exposure to heat, as coffee beans. 4. to cook or heat by embedding in hot coals, embers, etc.: to roast chestnuts. While Toast is only slightly cooked, to roast is to cook either in an oven or open fire (often using hot coal or ember)

toast and roast in the senses you intended, serve as both noun and verb, and roast in addition can be an adjective.

hehe. yes, "toast" and "roast" have different meanings, which are coincidentally very similar :)

Thank you Kat. You interpreted these words in a different way for me.